From d753356d4024cb735bc64b337d86ef2e309c8389 Mon Sep 17 00:00:00 2001 From: msksbr Date: Tue, 11 Jun 2024 01:53:01 +0800 Subject: [PATCH] =?UTF-8?q?=E6=8A=8Atest.java=E6=95=91=E5=9B=9E=E6=9D=A5?= =?UTF-8?q?=E4=BA=86?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 6月测试答案.txt | 52 +-- LICENSE | 42 +-- README.md | 32 +- 实验1/task1.java | 32 +- 实验1/task2.java | 34 +- 实验1/task3.java | 18 +- 实验1/task4.java | 18 +- 实验2/task1.java | 36 +- 实验2/task2.java | 26 +- 实验2/task3.java | 64 ++-- 实验2/task4.java | 24 +- 实验2/task5.java | 34 +- 实验2/task6.java | 20 +- 实验3/.vscode/settings.json | 14 +- 实验3/README.md | 36 +- 实验3/src/test1/Student.java | 42 +-- 实验3/src/test1/test.java | 28 +- 实验3/src/test2/Circle.java | 32 +- 实验3/src/test2/Cone.java | 42 +-- 实验3/src/test2/test.java | 28 +- 实验3/src/test3/Student.java | 66 ++-- 实验3/src/test3/test.java | 28 +- 实验3/src/test4/Yard.java | 40 +- 实验3/src/test4/test.java | 24 +- 实验3/src/test5/Employee.java | 50 +-- 实验3/src/test5/test.java | 38 +- 实验4/src/Task1/Animal.java | 28 +- 实验4/src/Task1/Dog.java | 32 +- 实验4/src/Task1/Test.java | 22 +- 实验4/src/Task2/Person.java | 26 +- 实验4/src/Task2/Student.java | 38 +- 实验4/src/Task4/Rectangle.java | 46 +-- 实验4/src/Task4/TestArea.java | 18 +- 实验4/src/Task5/Person.java | 20 +- 实验4/src/Task5/Student.java | 34 +- 实验4/src/Task5/Teacher.java | 30 +- 实验4/src/Task5/TestPerson.java | 44 +-- 实验4/src/case1/Task1.java | 256 ++++++------- 实验5/src/task1/Main.java | 48 +-- 实验5/src/task2/Main.java | 54 +-- 实验5/src/task3/StringLearning.java | 44 +-- 实验5/src/task4/Main.java | 30 +- 实验5/src/task5/Roster.java | 36 +- 实验6/src/task1/Task.java | 34 +- 实验6/src/task2/Task.java | 70 ++-- 实验6/src/task3/Task3.java | 514 +++++++++++++------------- 实验6/src/task4/Cuboid.java | 30 +- 实验6/src/task4/Rectangle.java | 48 +-- 实验6/src/task4/Test.java | 40 +- 实验7/src/task1/HelloCollections.java | 22 +- 实验7/src/task1/test.java | 12 + 实验7/src/task2/WalkCollection.java | 48 +-- 实验7/src/task3/HelloSet.java | 40 +- 实验7/src/task4/HelloHashMap.java | 42 +-- 54 files changed, 1309 insertions(+), 1297 deletions(-) create mode 100644 实验7/src/task1/test.java diff --git a/6月测试答案.txt b/6月测试答案.txt index 82a259c..1de6911 100644 --- a/6月测试答案.txt +++ b/6月测试答案.txt @@ -1,27 +1,27 @@ -判断题 -错 错 对 对 错 -错 对 对 对 错 -错 错 对 错 对 -对 错 对 对 对 -填空题 -21. -if(x>0) -y=1; -22. -public void main(String args[]){} -23. -PI=3.1415 -24. -finally -25. -numbers[numbers.lenth-1]=8.88 -26. -Object -27. -私有方法 -28. -类型安全 -29. -JFrame -30. +判断题 +错 错 对 对 错 +错 对 对 对 错 +错 错 对 错 对 +对 错 对 对 对 +填空题 +21. +if(x>0) +y=1; +22. +public void main(String args[]){} +23. +PI=3.1415 +24. +finally +25. +numbers[numbers.lenth-1]=8.88 +26. +Object +27. +私有方法 +28. +类型安全 +29. +JFrame +30. 传统的 for 循环 \ No newline at end of file diff --git a/LICENSE b/LICENSE index 14dd194..5f5e589 100644 --- a/LICENSE +++ b/LICENSE @@ -1,21 +1,21 @@ -MIT License - -Copyright (c) 2024 msksbr - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. +MIT License + +Copyright (c) 2024 msksbr + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/README.md b/README.md index 6e685cc..638983d 100644 --- a/README.md +++ b/README.md @@ -1,16 +1,16 @@ -# Java作业存放处 - -这是一个专门拿来存放java课时作业的地方 - -不会用git的，想直接看代码 -[点这里](https://gitee.com/msksbr/java-homework/tree/master/) - -以后我的代码都会放到这里，和我要代码的直接来仓库里找，会更新 - -帮忙点个免费的star呗 - -😃☕ - -[放个B站主页试试看](https://space.bilibili.com/521936200) - -![fufu可爱捏](readmeImage/fufu.gif) +# Java作业存放处 + +这是一个专门拿来存放java课时作业的地方 + +不会用git的，想直接看代码 +[点这里](https://gitee.com/msksbr/java-homework/tree/master/) + +以后我的代码都会放到这里，和我要代码的直接来仓库里找，会更新 + +帮忙点个免费的star呗 + +😃☕ + +[放个B站主页试试看](https://space.bilibili.com/521936200) + +![fufu可爱捏](readmeImage/fufu.gif) diff --git a/实验1/task1.java b/实验1/task1.java index 8ebfe23..57b2a16 100755 --- a/实验1/task1.java +++ b/实验1/task1.java @@ -1,17 +1,17 @@ -import java.util.Scanner; - -public class task1 { - public static void main(String args[]) { - Scanner input = new Scanner(System.in); - System.out.println("请输入第一个整数："); - int a = input.nextInt(); - System.out.println("请输入第二个整数："); - int b = input.nextInt(); - System.out.println("两数相加的结果为：" + (a + b)); - System.out.println("两数相减的结果为：" + (a - b)); - System.out.println("两数相乘的结果为：" + (a * b)); - System.out.println("两数相除的结果为：" + (a / b)); - System.out.println("两数取余数的结果为：" + (a % b)); - } - +import java.util.Scanner; + +public class task1 { + public static void main(String args[]) { + Scanner input = new Scanner(System.in); + System.out.println("请输入第一个整数："); + int a = input.nextInt(); + System.out.println("请输入第二个整数："); + int b = input.nextInt(); + System.out.println("两数相加的结果为：" + (a + b)); + System.out.println("两数相减的结果为：" + (a - b)); + System.out.println("两数相乘的结果为：" + (a * b)); + System.out.println("两数相除的结果为：" + (a / b)); + System.out.println("两数取余数的结果为：" + (a % b)); + } + } \ No newline at end of file diff --git a/实验1/task2.java b/实验1/task2.java index 4fa636f..e547031 100755 --- a/实验1/task2.java +++ b/实验1/task2.java @@ -1,17 +1,17 @@ -import java.util.Scanner; - -public class task2 { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - System.out.println("请输入一个数a："); - int a = input.nextInt(); - System.out.println("请输入一个数b："); - int b = input.nextInt(); - System.out.println("a==b=" + (a == b)); - System.out.println("a!=b=" + (a != b)); - System.out.println("a>b=" + (a > b)); - System.out.println("a=a=" + (b >= a)); - System.out.println("b<=a=" + (b <= a)); - } -} +import java.util.Scanner; + +public class task2 { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + System.out.println("请输入一个数a："); + int a = input.nextInt(); + System.out.println("请输入一个数b："); + int b = input.nextInt(); + System.out.println("a==b=" + (a == b)); + System.out.println("a!=b=" + (a != b)); + System.out.println("a>b=" + (a > b)); + System.out.println("a=a=" + (b >= a)); + System.out.println("b<=a=" + (b <= a)); + } +} diff --git a/实验1/task3.java b/实验1/task3.java index 35dc8f1..018d650 100755 --- a/实验1/task3.java +++ b/实验1/task3.java @@ -1,9 +1,9 @@ -import java.util.Scanner; - -public class task3 { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - int year = input.nextInt(); - System.out.println(year + "年是否为闰年：" + ((year % 4 == 0) | (year % 400 == 0))); - } -} +import java.util.Scanner; + +public class task3 { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + int year = input.nextInt(); + System.out.println(year + "年是否为闰年：" + ((year % 4 == 0) | (year % 400 == 0))); + } +} diff --git a/实验1/task4.java b/实验1/task4.java index 2abafa8..916f7d1 100755 --- a/实验1/task4.java +++ b/实验1/task4.java @@ -1,9 +1,9 @@ -import java.util.Scanner; - -public class task4 { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - int num = input.nextInt(); - System.out.println((num / 100 + num/10-num/100*10 + num % 10)); - } -} +import java.util.Scanner; + +public class task4 { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + int num = input.nextInt(); + System.out.println((num / 100 + num/10-num/100*10 + num % 10)); + } +} diff --git a/实验2/task1.java b/实验2/task1.java index 0ed148c..8513912 100755 --- a/实验2/task1.java +++ b/实验2/task1.java @@ -1,19 +1,19 @@ -import java.util.Scanner; - -public class task1 { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - double score = input.nextDouble(); - if (score >= 90 & score <= 100) { - System.out.println(4.0); - } else if (score >= 80 & score < 90) { - System.out.println(3.5); - } else if (score >= 70 && score < 80) { - System.out.println(3.0); - } else if (score >= 60 && score < 70) { - System.out.println(2.5); - } else { - System.out.println(0d); - } - } +import java.util.Scanner; + +public class task1 { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + double score = input.nextDouble(); + if (score >= 90 & score <= 100) { + System.out.println(4.0); + } else if (score >= 80 & score < 90) { + System.out.println(3.5); + } else if (score >= 70 && score < 80) { + System.out.println(3.0); + } else if (score >= 60 && score < 70) { + System.out.println(2.5); + } else { + System.out.println(0d); + } + } } \ No newline at end of file diff --git a/实验2/task2.java b/实验2/task2.java index aa354c9..e3e0439 100755 --- a/实验2/task2.java +++ b/实验2/task2.java @@ -1,13 +1,13 @@ -import java.util.Scanner; - -public class task2 { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - int goal = input.nextInt(); - int mutied = 1; - for (int i = 1; i <= goal; i++) { - mutied *= i; - } - System.out.println(mutied); - } -} +import java.util.Scanner; + +public class task2 { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + int goal = input.nextInt(); + int mutied = 1; + for (int i = 1; i <= goal; i++) { + mutied *= i; + } + System.out.println(mutied); + } +} diff --git a/实验2/task3.java b/实验2/task3.java index 6125dfb..820344a 100755 --- a/实验2/task3.java +++ b/实验2/task3.java @@ -1,32 +1,32 @@ -import java.util.Scanner; - -public class task3 { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - System.out.println("星级成绩评定系统"); - System.out.print("请输入成绩："); - double score = input.nextDouble(); - int stars = 0; - String starHanzi; - if (score > 90) { - stars = 5; - starHanzi = "五"; - } else if (score > 80 & score <= 90) { - stars = 4; - starHanzi = "四"; - } else if (score > 70 & score <= 80) { - stars = 3; - starHanzi = "三"; - } else if (score >= 60 & score <= 70) { - stars = 2; - starHanzi = "俩"; - } else { - stars=0; - starHanzi="无"; - } - for(int i=1;i<=stars;i++){ - System.out.print("*"); - } - System.out.println(starHanzi+"星成绩"); - } -} +import java.util.Scanner; + +public class task3 { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + System.out.println("星级成绩评定系统"); + System.out.print("请输入成绩："); + double score = input.nextDouble(); + int stars = 0; + String starHanzi; + if (score > 90) { + stars = 5; + starHanzi = "五"; + } else if (score > 80 & score <= 90) { + stars = 4; + starHanzi = "四"; + } else if (score > 70 & score <= 80) { + stars = 3; + starHanzi = "三"; + } else if (score >= 60 & score <= 70) { + stars = 2; + starHanzi = "俩"; + } else { + stars=0; + starHanzi="无"; + } + for(int i=1;i<=stars;i++){ + System.out.print("*"); + } + System.out.println(starHanzi+"星成绩"); + } +} diff --git a/实验2/task4.java b/实验2/task4.java index 5cf1ab8..171bd16 100755 --- a/实验2/task4.java +++ b/实验2/task4.java @@ -1,13 +1,13 @@ -public class task4 { - public static void main(String[] args) { - int time = 0; - for (int i = 1; i <= 100; i++) { - if (i % 6 == 0) { - System.out.print(i + " "); - time += 1; - } - } - System.out.println(); - System.out.println(time); - } +public class task4 { + public static void main(String[] args) { + int time = 0; + for (int i = 1; i <= 100; i++) { + if (i % 6 == 0) { + System.out.print(i + " "); + time += 1; + } + } + System.out.println(); + System.out.println(time); + } } \ No newline at end of file diff --git a/实验2/task5.java b/实验2/task5.java index 8ea6c66..b42ed1a 100755 --- a/实验2/task5.java +++ b/实验2/task5.java @@ -1,17 +1,17 @@ -public class task5 { - public static void main(String[] args) { - for (int i = 1; i <= 10; i++) { - for (int j = 1; j <= i; j++) { - System.out.print("*"); - } - System.out.println(); - } - System.out.println("-----------------我是华丽的分割线-----------------"); - for (int i = 10; i >= 1; i--) { - for (int j = 1; j <= i; j++) { - System.out.print("*"); - } - System.out.println(); - } - } -} +public class task5 { + public static void main(String[] args) { + for (int i = 1; i <= 10; i++) { + for (int j = 1; j <= i; j++) { + System.out.print("*"); + } + System.out.println(); + } + System.out.println("-----------------我是华丽的分割线-----------------"); + for (int i = 10; i >= 1; i--) { + for (int j = 1; j <= i; j++) { + System.out.print("*"); + } + System.out.println(); + } + } +} diff --git a/实验2/task6.java b/实验2/task6.java index 421d925..01ec6f9 100755 --- a/实验2/task6.java +++ b/实验2/task6.java @@ -1,10 +1,10 @@ -public class task6 { - public static void main(String[] args) { - for (int i = 1; i <= 9; i++) { - for (int j = 1; j <= i; j++) { - System.out.print(i + "*" + j + "=" + i * j + "\t"); - } - System.out.println(); - } - } -} +public class task6 { + public static void main(String[] args) { + for (int i = 1; i <= 9; i++) { + for (int j = 1; j <= i; j++) { + System.out.print(i + "*" + j + "=" + i * j + "\t"); + } + System.out.println(); + } + } +} diff --git a/实验3/.vscode/settings.json b/实验3/.vscode/settings.json index e112a70..0ac215c 100755 --- a/实验3/.vscode/settings.json +++ b/实验3/.vscode/settings.json @@ -1,7 +1,7 @@ -{ - "java.project.sourcePaths": ["src"], - "java.project.outputPath": "bin", - "java.project.referencedLibraries": [ - "lib/**/*.jar" - ] -} +{ + "java.project.sourcePaths": ["src"], + "java.project.outputPath": "bin", + "java.project.referencedLibraries": [ + "lib/**/*.jar" + ] +} diff --git a/实验3/README.md b/实验3/README.md index 7c03a53..a43b9f6 100755 --- a/实验3/README.md +++ b/实验3/README.md @@ -1,18 +1,18 @@ -## Getting Started - -Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code. - -## Folder Structure - -The workspace contains two folders by default, where: - -- `src`: the folder to maintain sources -- `lib`: the folder to maintain dependencies - -Meanwhile, the compiled output files will be generated in the `bin` folder by default. - -> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there. - -## Dependency Management - -The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies). +## Getting Started + +Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code. + +## Folder Structure + +The workspace contains two folders by default, where: + +- `src`: the folder to maintain sources +- `lib`: the folder to maintain dependencies + +Meanwhile, the compiled output files will be generated in the `bin` folder by default. + +> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there. + +## Dependency Management + +The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies). diff --git a/实验3/src/test1/Student.java b/实验3/src/test1/Student.java index 0bb49a7..884389b 100755 --- a/实验3/src/test1/Student.java +++ b/实验3/src/test1/Student.java @@ -1,21 +1,21 @@ -//Student.java -package test1; - -public class Student { - int id; - int age; - int grade; - - public void study() { - System.err.println("学号为" + id + "的学生正在学习"); - } - - public void examination() { - System.err.println(id + "年级正在考试"); - } - - public void tell() { - System.out.print("正在讲话的是一个" + age + "岁的学生"); - } - -} +//Student.java +package test1; + +public class Student { + int id; + int age; + int grade; + + public void study() { + System.err.println("学号为" + id + "的学生正在学习"); + } + + public void examination() { + System.err.println(id + "年级正在考试"); + } + + public void tell() { + System.out.print("正在讲话的是一个" + age + "岁的学生"); + } + +} diff --git a/实验3/src/test1/test.java b/实验3/src/test1/test.java index d09d0db..4edd4bf 100755 --- a/实验3/src/test1/test.java +++ b/实验3/src/test1/test.java @@ -1,14 +1,14 @@ -//test.java -package test1; - -public class test { - public static void main(String[] args) { - Student s1 = new Student(); - s1.id = 001; - s1.age = 18; - s1.grade = 1; - s1.study(); - s1.examination(); - s1.tell(); - } -} +//test.java +package test1; + +public class test { + public static void main(String[] args) { + Student s1 = new Student(); + s1.id = 001; + s1.age = 18; + s1.grade = 1; + s1.study(); + s1.examination(); + s1.tell(); + } +} diff --git a/实验3/src/test2/Circle.java b/实验3/src/test2/Circle.java index 2561a45..fcb3bb0 100755 --- a/实验3/src/test2/Circle.java +++ b/实验3/src/test2/Circle.java @@ -1,16 +1,16 @@ -//Circle.java -package test2; - -public class Circle { - double radius; - double area; - - public void set(double radius) { - this.radius = radius; - } - - public void disaplay() { - area = radius * radius * 3.14; - System.err.println("This circle's radius is " + radius + ", area is " + area); - } -} +//Circle.java +package test2; + +public class Circle { + double radius; + double area; + + public void set(double radius) { + this.radius = radius; + } + + public void disaplay() { + area = radius * radius * 3.14; + System.err.println("This circle's radius is " + radius + ", area is " + area); + } +} diff --git a/实验3/src/test2/Cone.java b/实验3/src/test2/Cone.java index be64ee6..bb00cb9 100755 --- a/实验3/src/test2/Cone.java +++ b/实验3/src/test2/Cone.java @@ -1,21 +1,21 @@ -//Cone.java -package test2; - -public class Cone { - double buttom; - double height; - - public void set(double buttom, double height) { - this.buttom = buttom; - this.height = height; - } - - public Cone() { - } - - public void disaplay() { - System.out.println( - "This cone's buttom area is " + buttom + ", height is " + height + ", volume is " - + buttom * height / 3); - } -} +//Cone.java +package test2; + +public class Cone { + double buttom; + double height; + + public void set(double buttom, double height) { + this.buttom = buttom; + this.height = height; + } + + public Cone() { + } + + public void disaplay() { + System.out.println( + "This cone's buttom area is " + buttom + ", height is " + height + ", volume is " + + buttom * height / 3); + } +} diff --git a/实验3/src/test2/test.java b/实验3/src/test2/test.java index f1b790f..e1acf9b 100755 --- a/实验3/src/test2/test.java +++ b/实验3/src/test2/test.java @@ -1,14 +1,14 @@ -//test.java -package test2; - -public class test { - - public static void main(String[] args) { - Circle r1 = new Circle(); - r1.set(3); - r1.disaplay(); - Cone c1 = new Cone(); - c1.set(28.26, 5); - c1.disaplay(); - } -} +//test.java +package test2; + +public class test { + + public static void main(String[] args) { + Circle r1 = new Circle(); + r1.set(3); + r1.disaplay(); + Cone c1 = new Cone(); + c1.set(28.26, 5); + c1.disaplay(); + } +} diff --git a/实验3/src/test3/Student.java b/实验3/src/test3/Student.java index 9bbc36c..6e1c4e0 100755 --- a/实验3/src/test3/Student.java +++ b/实验3/src/test3/Student.java @@ -1,33 +1,33 @@ -//Student.java -package test3; - -public class Student { - private int age; - private String sex; - - // setters - public void setAge(int age) { - if (age >= 0 & age <= 120) { - this.age = age; - } else { - this.age = 18; - } - } - - public void setSex(String sex) { - if ("男".equals(sex) || "女".equals(sex)) { - this.sex = sex; - } else { - this.sex = "保密"; - } - } - - // getters - public int getAge() { - return age; - } - - public String getSex() { - return sex; - } -} +//Student.java +package test3; + +public class Student { + private int age; + private String sex; + + // setters + public void setAge(int age) { + if (age >= 0 & age <= 120) { + this.age = age; + } else { + this.age = 18; + } + } + + public void setSex(String sex) { + if ("男".equals(sex) || "女".equals(sex)) { + this.sex = sex; + } else { + this.sex = "保密"; + } + } + + // getters + public int getAge() { + return age; + } + + public String getSex() { + return sex; + } +} diff --git a/实验3/src/test3/test.java b/实验3/src/test3/test.java index 08447ee..94aa4ca 100755 --- a/实验3/src/test3/test.java +++ b/实验3/src/test3/test.java @@ -1,14 +1,14 @@ -//test.java -package test3; - -import java.util.Scanner; - -public class test { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - Student s1 = new Student(); - s1.setAge(input.nextInt()); - s1.setSex(input.next()); - System.out.println("This student's age is " + s1.getAge() + ", gender is " + s1.getSex()); - } -} +//test.java +package test3; + +import java.util.Scanner; + +public class test { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + Student s1 = new Student(); + s1.setAge(input.nextInt()); + s1.setSex(input.next()); + System.out.println("This student's age is " + s1.getAge() + ", gender is " + s1.getSex()); + } +} diff --git a/实验3/src/test4/Yard.java b/实验3/src/test4/Yard.java index dc3a5dd..c184f19 100755 --- a/实验3/src/test4/Yard.java +++ b/实验3/src/test4/Yard.java @@ -1,20 +1,20 @@ -//Yard.java -package test4; - -public class Yard { - double length; - double width; - - public Yard(double length, double width) { - this.length = length; - this.width = width; - } - - public double getPerimeter() { - return (length + width) * 2; - } - - public double getAcreage() { - return length * width; - } -} +//Yard.java +package test4; + +public class Yard { + double length; + double width; + + public Yard(double length, double width) { + this.length = length; + this.width = width; + } + + public double getPerimeter() { + return (length + width) * 2; + } + + public double getAcreage() { + return length * width; + } +} diff --git a/实验3/src/test4/test.java b/实验3/src/test4/test.java index 892e4de..22cfdcc 100755 --- a/实验3/src/test4/test.java +++ b/实验3/src/test4/test.java @@ -1,12 +1,12 @@ -//test.java -package test4; - -import java.util.Scanner; - -public class test { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - Yard y1 = new Yard(input.nextDouble(), input.nextDouble()); - System.err.println(y1.getPerimeter()+" "+y1.getAcreage()); - } -} +//test.java +package test4; + +import java.util.Scanner; + +public class test { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + Yard y1 = new Yard(input.nextDouble(), input.nextDouble()); + System.err.println(y1.getPerimeter()+" "+y1.getAcreage()); + } +} diff --git a/实验3/src/test5/Employee.java b/实验3/src/test5/Employee.java index bebbaff..9fac483 100755 --- a/实验3/src/test5/Employee.java +++ b/实验3/src/test5/Employee.java @@ -1,25 +1,25 @@ -//Employee.java -package test5; - -public class Employee { - String name; - int age; - String dept; - static String company; - - public void showInfos() { - System.out.println("name\t" + name); - System.out.println("age\t" + age); - System.out.println("dept\t" + dept); - System.out.println("company\t" + company); - System.out.println(); - } - - public static int compareAge(int age1, int age2) { - if (age1 > age2) { - return age1; - } else { - return age2; - } - } -} +//Employee.java +package test5; + +public class Employee { + String name; + int age; + String dept; + static String company; + + public void showInfos() { + System.out.println("name\t" + name); + System.out.println("age\t" + age); + System.out.println("dept\t" + dept); + System.out.println("company\t" + company); + System.out.println(); + } + + public static int compareAge(int age1, int age2) { + if (age1 > age2) { + return age1; + } else { + return age2; + } + } +} diff --git a/实验3/src/test5/test.java b/实验3/src/test5/test.java index 34d9d87..3da1b9a 100755 --- a/实验3/src/test5/test.java +++ b/实验3/src/test5/test.java @@ -1,19 +1,19 @@ -//test.java -package test5; - -public class test { - public static void main(String[] args) { - Employee e1 = new Employee(); - e1.name = "Jack"; - e1.age = 30; - e1.dept = "Software"; - Employee.company = "XJIT.inc"; - e1.showInfos(); - Employee e2 = new Employee(); - e2.name = "Mike"; - e2.age = 45; - e2.dept = "Hardware"; - e2.showInfos(); - System.out.println("2个人中最大年龄是" + Employee.compareAge(e1.age, e2.age) + "岁。"); - } -} +//test.java +package test5; + +public class test { + public static void main(String[] args) { + Employee e1 = new Employee(); + e1.name = "Jack"; + e1.age = 30; + e1.dept = "Software"; + Employee.company = "XJIT.inc"; + e1.showInfos(); + Employee e2 = new Employee(); + e2.name = "Mike"; + e2.age = 45; + e2.dept = "Hardware"; + e2.showInfos(); + System.out.println("2个人中最大年龄是" + Employee.compareAge(e1.age, e2.age) + "岁。"); + } +} diff --git a/实验4/src/Task1/Animal.java b/实验4/src/Task1/Animal.java index d87087c..b0b657b 100755 --- a/实验4/src/Task1/Animal.java +++ b/实验4/src/Task1/Animal.java @@ -1,14 +1,14 @@ -//Animal.java -package Task1; - -public class Animal { - String name; - - public Animal() { - System.out.println("super"); - } - - public void shout() { - System.out.println(String.format("%s发出叫声", this.name)); - } -} +//Animal.java +package Task1; + +public class Animal { + String name; + + public Animal() { + System.out.println("super"); + } + + public void shout() { + System.out.println(String.format("%s发出叫声", this.name)); + } +} diff --git a/实验4/src/Task1/Dog.java b/实验4/src/Task1/Dog.java index 0fd562e..22cd96c 100755 --- a/实验4/src/Task1/Dog.java +++ b/实验4/src/Task1/Dog.java @@ -1,16 +1,16 @@ -//Dog.java -package Task1; - -public class Dog extends Animal { - public Dog() { - super(); - } - - public void shout() { - System.out.println(String.format("%s发出汪汪叫", this.name)); - } - - public void superShout() { - super.shout(); - } -} +//Dog.java +package Task1; + +public class Dog extends Animal { + public Dog() { + super(); + } + + public void shout() { + System.out.println(String.format("%s发出汪汪叫", this.name)); + } + + public void superShout() { + super.shout(); + } +} diff --git a/实验4/src/Task1/Test.java b/实验4/src/Task1/Test.java index 0a90a92..7b50337 100755 --- a/实验4/src/Task1/Test.java +++ b/实验4/src/Task1/Test.java @@ -1,11 +1,11 @@ -//Test.java -package Task1; - -public class Test { - public static void main(String[] args) { - Dog lucky = new Dog(); - lucky.name = "lucky"; - lucky.shout(); - lucky.superShout(); - } -} +//Test.java +package Task1; + +public class Test { + public static void main(String[] args) { + Dog lucky = new Dog(); + lucky.name = "lucky"; + lucky.shout(); + lucky.superShout(); + } +} diff --git a/实验4/src/Task2/Person.java b/实验4/src/Task2/Person.java index b449197..9323af1 100755 --- a/实验4/src/Task2/Person.java +++ b/实验4/src/Task2/Person.java @@ -1,13 +1,13 @@ -//Person.java -package Task2; - -public abstract class Person { - String name; - int age; - - public Person() { - System.out.println("super"); - } - - public abstract void sayHello(); -} +//Person.java +package Task2; + +public abstract class Person { + String name; + int age; + + public Person() { + System.out.println("super"); + } + + public abstract void sayHello(); +} diff --git a/实验4/src/Task2/Student.java b/实验4/src/Task2/Student.java index 1d71a2b..c1ee9a7 100755 --- a/实验4/src/Task2/Student.java +++ b/实验4/src/Task2/Student.java @@ -1,19 +1,19 @@ -//Student.java -package Task2; - -public class Student extends Person { - public Student() { - super(); - } - - public void sayHello() { - System.out.println(String.format("大家好，我叫%s，今年%d岁，很高兴认识大家", this.name, this.age)); - } - - public static void main(String[] args) { - Student s1 = new Student(); - s1.name = "Jack"; - s1.age = 18; - s1.sayHello(); - } -} +//Student.java +package Task2; + +public class Student extends Person { + public Student() { + super(); + } + + public void sayHello() { + System.out.println(String.format("大家好，我叫%s，今年%d岁，很高兴认识大家", this.name, this.age)); + } + + public static void main(String[] args) { + Student s1 = new Student(); + s1.name = "Jack"; + s1.age = 18; + s1.sayHello(); + } +} diff --git a/实验4/src/Task4/Rectangle.java b/实验4/src/Task4/Rectangle.java index acd989b..04518eb 100755 --- a/实验4/src/Task4/Rectangle.java +++ b/实验4/src/Task4/Rectangle.java @@ -1,24 +1,24 @@ -//Rectangle.java -package Task4; - -public class Rectangle { - public interface AreaRectangle { - - } - - private double x; - private double y; - - public Rectangle(double x, double y) { - this.x = x; - this.y = y; - } - - public double area() { - return x * y; - } - - public String toString() { - return "该长方形面积为" + this.area(); - } +//Rectangle.java +package Task4; + +public class Rectangle { + public interface AreaRectangle { + + } + + private double x; + private double y; + + public Rectangle(double x, double y) { + this.x = x; + this.y = y; + } + + public double area() { + return x * y; + } + + public String toString() { + return "该长方形面积为" + this.area(); + } } \ No newline at end of file diff --git a/实验4/src/Task4/TestArea.java b/实验4/src/Task4/TestArea.java index 73837b8..26f8b11 100755 --- a/实验4/src/Task4/TestArea.java +++ b/实验4/src/Task4/TestArea.java @@ -1,9 +1,9 @@ -//TestArea.java -package Task4; - -public class TestArea { - public static void main(String[] args) { - Rectangle r1 = new Rectangle(10.0, 20.0); - System.out.println(r1.toString()); - } -} +//TestArea.java +package Task4; + +public class TestArea { + public static void main(String[] args) { + Rectangle r1 = new Rectangle(10.0, 20.0); + System.out.println(r1.toString()); + } +} diff --git a/实验4/src/Task5/Person.java b/实验4/src/Task5/Person.java index c675c33..182c800 100755 --- a/实验4/src/Task5/Person.java +++ b/实验4/src/Task5/Person.java @@ -1,10 +1,10 @@ -//Person.java -package Task5; - -public abstract class Person { - String name; - String gender; - String birthday; - - public abstract void printInfo(); -} +//Person.java +package Task5; + +public abstract class Person { + String name; + String gender; + String birthday; + + public abstract void printInfo(); +} diff --git a/实验4/src/Task5/Student.java b/实验4/src/Task5/Student.java index 57bdeae..1068feb 100755 --- a/实验4/src/Task5/Student.java +++ b/实验4/src/Task5/Student.java @@ -1,17 +1,17 @@ -//Student.java -package Task5; - -public class Student extends Person { - String school; - String id; - String grade; - - public void printInfo() { - System.out.println("name:\t" + this.name); - System.out.println("gender:\t" + this.gender); - System.out.println("birthday:\t" + this.birthday); - System.out.println("school:\t" + this.school); - System.out.println("id:\t" + this.id); - System.out.println("grade\t" + this.grade); - } -} +//Student.java +package Task5; + +public class Student extends Person { + String school; + String id; + String grade; + + public void printInfo() { + System.out.println("name:\t" + this.name); + System.out.println("gender:\t" + this.gender); + System.out.println("birthday:\t" + this.birthday); + System.out.println("school:\t" + this.school); + System.out.println("id:\t" + this.id); + System.out.println("grade\t" + this.grade); + } +} diff --git a/实验4/src/Task5/Teacher.java b/实验4/src/Task5/Teacher.java index 8ad331f..cc3e008 100755 --- a/实验4/src/Task5/Teacher.java +++ b/实验4/src/Task5/Teacher.java @@ -1,15 +1,15 @@ -//Teacher.java -package Task5; - -public class Teacher extends Person { - String school; - String id; - - public void printInfo() { - System.out.println("name:\t" + this.name); - System.out.println("gender:\t" + this.gender); - System.out.println("birthday:\t" + this.birthday); - System.out.println("school:\t" + this.school); - System.out.println("id:\t" + this.id); - } -} +//Teacher.java +package Task5; + +public class Teacher extends Person { + String school; + String id; + + public void printInfo() { + System.out.println("name:\t" + this.name); + System.out.println("gender:\t" + this.gender); + System.out.println("birthday:\t" + this.birthday); + System.out.println("school:\t" + this.school); + System.out.println("id:\t" + this.id); + } +} diff --git a/实验4/src/Task5/TestPerson.java b/实验4/src/Task5/TestPerson.java index 630f7ba..6c034ff 100755 --- a/实验4/src/Task5/TestPerson.java +++ b/实验4/src/Task5/TestPerson.java @@ -1,22 +1,22 @@ -//TestPerson.java -package Task5; - -public class TestPerson { - public static void main(String[] args) { - Student s1 = new Student(); - s1.name = "Jason Fate Chen"; - s1.gender = "male"; - s1.birthday = "May.5th.2005"; - s1.school = "XJIT"; - s1.id = "202301130071"; - s1.grade = "1"; - s1.printInfo(); - Teacher t1 = new Teacher(); - t1.name = "White"; - t1.gender = "female"; - t1.birthday = "Mar.7th.1993"; - t1.school = "Tsinghua"; - t1.id = "199303071145"; - t1.printInfo(); - } -} +//TestPerson.java +package Task5; + +public class TestPerson { + public static void main(String[] args) { + Student s1 = new Student(); + s1.name = "Jason Fate Chen"; + s1.gender = "male"; + s1.birthday = "May.5th.2005"; + s1.school = "XJIT"; + s1.id = "202301130071"; + s1.grade = "1"; + s1.printInfo(); + Teacher t1 = new Teacher(); + t1.name = "White"; + t1.gender = "female"; + t1.birthday = "Mar.7th.1993"; + t1.school = "Tsinghua"; + t1.id = "199303071145"; + t1.printInfo(); + } +} diff --git a/实验4/src/case1/Task1.java b/实验4/src/case1/Task1.java index 4b34aa9..3c35966 100755 --- a/实验4/src/case1/Task1.java +++ b/实验4/src/case1/Task1.java @@ -1,129 +1,129 @@ -package case1; - -import java.util.Scanner; - -public class Task1 { - public static void main(String[] args) { - Scanner sc = new Scanner(System.in); - String dogName = sc.next(); - String dogSex = sc.next(); - String dogColor = sc.next(); - String catName = sc.next(); - String catSex = sc.next(); - double catWeight = sc.nextDouble(); - // 通过有参构造函数实例化Dog类对象dog - // dog调用talk()方法 - // dog调用eat()方法 - /********* begin *********/ - Dog lucky = new Dog(dogName, dogSex, dogColor); - lucky.talk(); - lucky.eat(); - /********* end *********/ - // 通过有参构造函数实例化Cat类对象cat - // cat调用talk()方法 - // cat调用eat()方法 - /********* begin *********/ - Cat 哈基米 = new Cat(catName, catSex, catWeight); - 哈基米.talk(); - 哈基米.eat(); - /********* end *********/ - } -} - -// 抽象类Pet 封装属性name和sex -// 构造函数初始化name和sex -// 声明抽象方法talk() -// 声明抽象方法eat() -abstract class Pet { - /********* begin *********/ - protected String name; - protected String sex; - - public String getName() { - return name; - } - - public void setName(String name) { - this.name = name; - } - - public String getSex() { - return sex; - } - - public void setSex(String sex) { - this.sex = sex; - } - - public abstract void talk(); - - public abstract void eat(); - /********* end *********/ -} - -// Dog类继承自Pet类 封装属性color -// 构造函数初始化name、sex和color -// 实现自己的talk()方法和eat()方法 -// talk()输出'名称：name，性别：sex，颜色：color，汪汪叫' -// eat()输出'name吃骨头' -class Dog extends Pet { - /********* begin *********/ - private String color; - - public String getColor() { - return color; - } - - public void setColor(String color) { - this.color = color; - } - - public Dog(String name, String sex, String color) { - this.name = name; - this.sex = sex; - this.color = color; - } - - public void talk() { - System.out.println("名称:" + this.name + "，性别：" + this.sex + "，颜色：" + this.color + "，汪汪叫"); - } - - public void eat() { - System.out.println(this.name + "吃骨头"); - } - /********* end *********/ -} - -// Cat类继承自Pet类 封装属性weight -// 构造函数初始化name、sex和weight -// 实现自己的talk()方法和eat()方法 -// talk()输出'名称：name，性别：sex，体重：weight kg，喵喵叫' -// eat()输出'name吃鱼' -class Cat extends Pet { - /********* begin *********/ - private double weight; - - public double getWeight() { - return weight; - } - - public void setWeight(double weight) { - this.weight = weight; - } - - public Cat(String name, String sex, double weight) { - this.name = name; - this.sex = sex; - this.weight = weight; - } - - public void talk() { - System.out.println("名称:" + this.name + "，性别：" + this.sex + "，体重：" + this.weight + " kg，喵喵叫"); - } - - public void eat() { - System.out.println(this.name + "吃鱼"); - } - /********* end *********/ - +package case1; + +import java.util.Scanner; + +public class Task1 { + public static void main(String[] args) { + Scanner sc = new Scanner(System.in); + String dogName = sc.next(); + String dogSex = sc.next(); + String dogColor = sc.next(); + String catName = sc.next(); + String catSex = sc.next(); + double catWeight = sc.nextDouble(); + // 通过有参构造函数实例化Dog类对象dog + // dog调用talk()方法 + // dog调用eat()方法 + /********* begin *********/ + Dog lucky = new Dog(dogName, dogSex, dogColor); + lucky.talk(); + lucky.eat(); + /********* end *********/ + // 通过有参构造函数实例化Cat类对象cat + // cat调用talk()方法 + // cat调用eat()方法 + /********* begin *********/ + Cat 哈基米 = new Cat(catName, catSex, catWeight); + 哈基米.talk(); + 哈基米.eat(); + /********* end *********/ + } +} + +// 抽象类Pet 封装属性name和sex +// 构造函数初始化name和sex +// 声明抽象方法talk() +// 声明抽象方法eat() +abstract class Pet { + /********* begin *********/ + protected String name; + protected String sex; + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public String getSex() { + return sex; + } + + public void setSex(String sex) { + this.sex = sex; + } + + public abstract void talk(); + + public abstract void eat(); + /********* end *********/ +} + +// Dog类继承自Pet类 封装属性color +// 构造函数初始化name、sex和color +// 实现自己的talk()方法和eat()方法 +// talk()输出'名称：name，性别：sex，颜色：color，汪汪叫' +// eat()输出'name吃骨头' +class Dog extends Pet { + /********* begin *********/ + private String color; + + public String getColor() { + return color; + } + + public void setColor(String color) { + this.color = color; + } + + public Dog(String name, String sex, String color) { + this.name = name; + this.sex = sex; + this.color = color; + } + + public void talk() { + System.out.println("名称:" + this.name + "，性别：" + this.sex + "，颜色：" + this.color + "，汪汪叫"); + } + + public void eat() { + System.out.println(this.name + "吃骨头"); + } + /********* end *********/ +} + +// Cat类继承自Pet类 封装属性weight +// 构造函数初始化name、sex和weight +// 实现自己的talk()方法和eat()方法 +// talk()输出'名称：name，性别：sex，体重：weight kg，喵喵叫' +// eat()输出'name吃鱼' +class Cat extends Pet { + /********* begin *********/ + private double weight; + + public double getWeight() { + return weight; + } + + public void setWeight(double weight) { + this.weight = weight; + } + + public Cat(String name, String sex, double weight) { + this.name = name; + this.sex = sex; + this.weight = weight; + } + + public void talk() { + System.out.println("名称:" + this.name + "，性别：" + this.sex + "，体重：" + this.weight + " kg，喵喵叫"); + } + + public void eat() { + System.out.println(this.name + "吃鱼"); + } + /********* end *********/ + } \ No newline at end of file diff --git a/实验5/src/task1/Main.java b/实验5/src/task1/Main.java index 240a424..947d975 100755 --- a/实验5/src/task1/Main.java +++ b/实验5/src/task1/Main.java @@ -1,25 +1,25 @@ -//Main.java -package task1; - -import java.util.Date; -import java.util.Scanner; -import java.text.ParseException; -import java.text.SimpleDateFormat; -import java.util.Locale; - -public class Main { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - SimpleDateFormat in = new SimpleDateFormat("yyyy M dd"); - Date d = new Date(); - try { - d = in.parse(input.nextLine()); - } catch (ParseException e) { - e.printStackTrace(); - } - SimpleDateFormat out = new SimpleDateFormat("yyyy MMMM dd EEEE", Locale.ENGLISH); - String formattedDate = out.format(d); - System.out.println("今天是" + out.format(d).toUpperCase()); - - } +//Main.java +package task1; + +import java.util.Date; +import java.util.Scanner; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Locale; + +public class Main { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + SimpleDateFormat in = new SimpleDateFormat("yyyy M dd"); + Date d = new Date(); + try { + d = in.parse(input.nextLine()); + } catch (ParseException e) { + e.printStackTrace(); + } + SimpleDateFormat out = new SimpleDateFormat("yyyy MMMM dd EEEE", Locale.ENGLISH); + String formattedDate = out.format(d); + System.out.println("今天是" + out.format(d).toUpperCase()); + + } } \ No newline at end of file diff --git a/实验5/src/task2/Main.java b/实验5/src/task2/Main.java index 743bc70..718ac40 100755 --- a/实验5/src/task2/Main.java +++ b/实验5/src/task2/Main.java @@ -1,27 +1,27 @@ -//Main.java -package task2; - -import java.text.ParseException; -import java.text.SimpleDateFormat; -import java.util.Date; -import java.util.Locale; -import java.util.Scanner; - -public class Main { - public static void main(String[] args) { - Scanner input = new Scanner(System.in); - Date inDate = new Date(); - SimpleDateFormat inFormat = new SimpleDateFormat("yyyy年M月d日", Locale.CHINA); - System.out.print("请输入您家孩子的出生日期（格式为yyyy年M月d日）："); - try { - inDate = inFormat.parse(input.nextLine()); - } catch (ParseException e) { - e.printStackTrace(); - } - long inTimeStamp = inDate.getTime(); - long outTimeStamp = inTimeStamp + (long) 100 * 24 * 60 * 60 * 1000; - Date outDate = new Date(outTimeStamp); - SimpleDateFormat outFormat = new SimpleDateFormat("yyyy年M月dd日 EEEE", Locale.CHINA); - System.out.println("经计算，您家孩子的百日宴应该设在" + outFormat.format(outDate)); - } -} +//Main.java +package task2; + +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Date; +import java.util.Locale; +import java.util.Scanner; + +public class Main { + public static void main(String[] args) { + Scanner input = new Scanner(System.in); + Date inDate = new Date(); + SimpleDateFormat inFormat = new SimpleDateFormat("yyyy年M月d日", Locale.CHINA); + System.out.print("请输入您家孩子的出生日期（格式为yyyy年M月d日）："); + try { + inDate = inFormat.parse(input.nextLine()); + } catch (ParseException e) { + e.printStackTrace(); + } + long inTimeStamp = inDate.getTime(); + long outTimeStamp = inTimeStamp + (long) 100 * 24 * 60 * 60 * 1000; + Date outDate = new Date(outTimeStamp); + SimpleDateFormat outFormat = new SimpleDateFormat("yyyy年M月dd日 EEEE", Locale.CHINA); + System.out.println("经计算，您家孩子的百日宴应该设在" + outFormat.format(outDate)); + } +} diff --git a/实验5/src/task3/StringLearning.java b/实验5/src/task3/StringLearning.java index 565ff61..ed44635 100755 --- a/实验5/src/task3/StringLearning.java +++ b/实验5/src/task3/StringLearning.java @@ -1,22 +1,22 @@ -package task3; - -import java.util.Scanner; - -public class StringLearning { - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - String stringExample = scanner.next(); - String endStr = " end"; - // ---------------------Begin------------------------ - System.out.println(stringExample);// 1.输出原字符串 - System.out.println(stringExample.length());// 2.求出字符串长度 - // 3.字符串转换成相应的大/小写 - System.out.println(stringExample.toUpperCase()); - System.out.println(stringExample.toLowerCase()); - // 4.截取指定位置的字符串（3-7） - System.out.println(stringExample.substring(3, 7)); - // 5.字符串相加具体输出要求请看测试说明。 - System.out.println(stringExample + endStr); - // ---------------------End------------------------ - } -} +package task3; + +import java.util.Scanner; + +public class StringLearning { + public static void main(String[] args) { + Scanner scanner = new Scanner(System.in); + String stringExample = scanner.next(); + String endStr = " end"; + // ---------------------Begin------------------------ + System.out.println(stringExample);// 1.输出原字符串 + System.out.println(stringExample.length());// 2.求出字符串长度 + // 3.字符串转换成相应的大/小写 + System.out.println(stringExample.toUpperCase()); + System.out.println(stringExample.toLowerCase()); + // 4.截取指定位置的字符串（3-7） + System.out.println(stringExample.substring(3, 7)); + // 5.字符串相加具体输出要求请看测试说明。 + System.out.println(stringExample + endStr); + // ---------------------End------------------------ + } +} diff --git a/实验5/src/task4/Main.java b/实验5/src/task4/Main.java index b620d19..509513c 100755 --- a/实验5/src/task4/Main.java +++ b/实验5/src/task4/Main.java @@ -1,15 +1,15 @@ -//Main.java -package task4; - -import java.lang.Math; - -public class Main { - public static void main(String[] args) { - double value1 = 2, value2 = 0; - System.out.println("绝对值：\t" + Math.abs(value1)); - System.out.println("3次幂：\t" + Math.pow(value1, 3)); - System.out.println("二次方根：\t" + Math.pow(value1, 0.5)); - System.out.println("sin值：\t" + Math.sin(value1)); - System.out.println("较大者：\t" + Math.max(value1, value2)); - } -} +//Main.java +package task4; + +import java.lang.Math; + +public class Main { + public static void main(String[] args) { + double value1 = 2, value2 = 0; + System.out.println("绝对值：\t" + Math.abs(value1)); + System.out.println("3次幂：\t" + Math.pow(value1, 3)); + System.out.println("二次方根：\t" + Math.pow(value1, 0.5)); + System.out.println("sin值：\t" + Math.sin(value1)); + System.out.println("较大者：\t" + Math.max(value1, value2)); + } +} diff --git a/实验5/src/task5/Roster.java b/实验5/src/task5/Roster.java index 3035249..4fd0d23 100755 --- a/实验5/src/task5/Roster.java +++ b/实验5/src/task5/Roster.java @@ -1,18 +1,18 @@ -package task5; - -import java.util.Scanner; - -public class Roster { - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - /********** Begin *********/ - String roster1 = "张三,李四,王五"; - String roster2 = scanner.nextLine(); - if (roster1.equals(roster2)) { - System.out.println("相同"); - } else { - System.out.println("不同"); - } - /********** End *********/ - } -} +package task5; + +import java.util.Scanner; + +public class Roster { + public static void main(String[] args) { + Scanner scanner = new Scanner(System.in); + /********** Begin *********/ + String roster1 = "张三,李四,王五"; + String roster2 = scanner.nextLine(); + if (roster1.equals(roster2)) { + System.out.println("相同"); + } else { + System.out.println("不同"); + } + /********** End *********/ + } +} diff --git a/实验6/src/task1/Task.java b/实验6/src/task1/Task.java index 5da77f0..2f5d7cf 100755 --- a/实验6/src/task1/Task.java +++ b/实验6/src/task1/Task.java @@ -1,18 +1,18 @@ -package task1; - -import java.util.Scanner; - -public class Task { - public static void main(String[] args) { - Scanner sc = new Scanner(System.in); - int num1 = sc.nextInt(); - int num2 = sc.nextInt(); - /********* Begin *********/ - try { - System.out.println(num1 / num2); - } catch (java.lang.ArithmeticException e) { - System.out.println("除数不能为0"); - } - /********* End *********/ - } +package task1; + +import java.util.Scanner; + +public class Task { + public static void main(String[] args) { + Scanner sc = new Scanner(System.in); + int num1 = sc.nextInt(); + int num2 = sc.nextInt(); + /********* Begin *********/ + try { + System.out.println(num1 / num2); + } catch (java.lang.ArithmeticException e) { + System.out.println("除数不能为0"); + } + /********* End *********/ + } } \ No newline at end of file diff --git a/实验6/src/task2/Task.java b/实验6/src/task2/Task.java index f21cbf9..76311e9 100755 --- a/实验6/src/task2/Task.java +++ b/实验6/src/task2/Task.java @@ -1,35 +1,35 @@ -package task2; - -import java.util.Scanner; - -public class Task { - /********* Begin *********/ - public static void main(String[] args) { - Scanner sc = new Scanner(System.in); - String username = sc.next(); - // 判断用户名 - if (username.length() < 3) { - try { - throw new MyException("用户名小于3位Exception"); - } catch (MyException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } - } else { - System.out.println("用户名格式正确"); - } - - } -} - -class MyException extends java.lang.Exception { - public MyException() { - super(); - - } - - public MyException(String msg) { - super(msg); - } -} -/********* End *********/ +package task2; + +import java.util.Scanner; + +public class Task { + /********* Begin *********/ + public static void main(String[] args) { + Scanner sc = new Scanner(System.in); + String username = sc.next(); + // 判断用户名 + if (username.length() < 3) { + try { + throw new MyException("用户名小于3位Exception"); + } catch (MyException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + } else { + System.out.println("用户名格式正确"); + } + + } +} + +class MyException extends java.lang.Exception { + public MyException() { + super(); + + } + + public MyException(String msg) { + super(msg); + } +} +/********* End *********/ diff --git a/实验6/src/task3/Task3.java b/实验6/src/task3/Task3.java index f6d0d79..cc11422 100755 --- a/实验6/src/task3/Task3.java +++ b/实验6/src/task3/Task3.java @@ -1,258 +1,258 @@ -package task3; - -import java.util.Scanner; - -public class Task3 { - public static void main(String[] args) { - Scanner sc = new Scanner(System.in); - String pppName = sc.next(); - int pppAge = sc.nextInt(); - String bpName = sc.next(); - int bpAge = sc.nextInt(); - String ppcName = sc.next(); - int ppcAge = sc.nextInt(); - String bcName = sc.next(); - int bcAge = sc.nextInt(); - // 测试运动员(乒乓球运动员和篮球运动员) - // 乒乓球运动员 - // 通过带参构造函数实例化PingPangPlayer对象ppp - // 输出'name---age' - // 分别调用sleep()、eat()、study()、speak()方法 - /********* begin *********/ - PingPangPlayer ppp = new PingPangPlayer(pppName, pppAge); - System.out.println(ppp.getName() + "---" + ppp.getAge()); - ppp.sleep(); - ppp.eat(); - ppp.study(); - ppp.speak(); - /********* end *********/ - System.out.println("----------------"); - // 篮球运动员 - // 通过带参构造函数实例化BasketballPlayer对象bp - // 输出'name---age' - // 分别调用sleep()、eat()、study()方法 - /********* begin *********/ - BasketballPlayer bp = new BasketballPlayer(bpName, bpAge); - System.out.println(bp.getName() + "---" + bp.getAge()); - bp.sleep(); - bp.eat(); - bp.study(); - /********* end *********/ - System.out.println("----------------"); - // 测试教练(乒乓球教练和篮球教练) - // 乒乓球教练 - // 通过带参构造函数实例化PingPangCoach对象ppc - // 输出'name---age' - // 分别调用sleep()、eat()、teach()、speak()方法 - /********* begin *********/ - PingPangCoach ppc = new PingPangCoach(ppcName, ppcAge); - System.out.println(ppc.getName() + "---" + ppc.getAge()); - ppc.sleep(); - ppc.eat(); - ppc.teach(); - ppc.speak(); - /********* end *********/ - System.out.println("----------------"); - // 篮球教练 - // 通过带参构造函数实例化BasketballCoach对象bc - // 输出'name---age' - // 分别调用sleep()、eat()、teach()方法 - /********* begin *********/ - BasketballCoach bc = new BasketballCoach(bcName, bcAge); - System.out.println(bc.getName() + "---" + bc.getAge()); - bc.sleep(); - bc.eat(); - bc.teach(); - /********* end *********/ - System.out.println("----------------"); - } -} - -// 说英语接口 声明抽象方法speak() -interface SpeakEnglish { - /********* begin *********/ - public abstract void speak(); - /********* end *********/ -} - -// 定义人的抽象类Person 封装name和age -// 无参构造函数 -// 有参构造函数初始化name和age -// 定义具体方法sleep() 输出'人都是要睡觉的' -// 抽象方法eat()（吃的不一样） -abstract class Person { - /********* begin *********/ - private String name; - private int age; - - public String getName() { - return name; - } - - public void setName(String name) { - this.name = name; - } - - public int getAge() { - return age; - } - - public void setAge(int age) { - this.age = age; - } - - public Person() { - } - - public Person(String name, int age) { - this.name = name; - this.age = age; - } - - public void sleep() { - System.out.println("人都是要睡觉的"); - } - - public abstract void eat(); - /********* end *********/ -} - -// 定义运动员Player（抽象类）继承自Person类 -// 无参构造函数 -// 有参构造函数初始化name和age -// 运动员学习内容不一样，抽取为抽象 定义抽象方法study() -abstract class Player extends Person { - /********* begin *********/ - public Player() { - } - - public Player(String name, int age) { - super(name, age); - } - - public abstract void study(); - /********* end *********/ -} - -// 定义教练Coach（抽象类）继承自Person类 -// 无参构造函数 -// 有参构造函数初始化name和age -// 教练教的不一样 定义抽象方法teach() -abstract class Coach extends Person { - /********* begin *********/ - public Coach() { - } - - public Coach(String name, int age) { - super(name, age); - } - - public abstract void teach(); - /********* end *********/ -} - -// 定义乒乓球运动员具体类PingPangPlayer 继承自Player类并实现SpeakEnglish类（兵乓球运动员需要说英语） -// 无参构造函数 -// 有参构造函数初始化name和age -// 实现自己的eat()方法 输出'乒乓球运动员吃大白菜，喝小米粥' -// 实现自己的study()方法 输出'乒乓球运动员学习如何发球和接球' -// 实现自己的speak()方法 输出'乒乓球运动员说英语' -class PingPangPlayer extends Player implements SpeakEnglish { - /********* begin *********/ - public PingPangPlayer() { - } - - public PingPangPlayer(String name, int age) { - super(name, age); - } - - public void eat() { - System.out.println("乒乓球运动员吃大白菜，喝小米粥"); - } - - public void study() { - System.out.println("乒乓球运动员学习如何发球和接球"); - } - - public void speak() { - System.out.println("乒乓球运动员说英语"); - } - /********* end *********/ -} - -// 定义篮球运动员具体类BasketballPlayer 继承自Player类 不需要继承接口，因为他不需要说英语 -// 无参构造函数 -// 有参构造函数初始化name和age -// 实现自己的eat()方法 输出'篮球运动员吃牛肉，喝牛奶' -// 实现自己的study()方法 输出'篮球运动员学习如何运球和投篮' -class BasketballPlayer extends Player { - /********* begin *********/ - public BasketballPlayer() { - } - - public BasketballPlayer(String name, int age) { - super(name, age); - } - - public void eat() { - System.out.println("篮球运动员吃牛肉，喝牛奶"); - } - - public void study() { - System.out.println("篮球运动员学习如何运球和投篮"); - } - /********* end *********/ -} - -// 定义乒乓球教练具体类 PingPangCoach 继承自Coach类并实现SpeakEnglish类（兵乓球教练需要说英语） -// 无参构造函数 -// 有参构造函数初始化name和age -// 实现自己的eat()方法 输出'乒乓球教练吃小白菜，喝大米粥' -// 实现自己的teach()方法 输出'乒乓球教练教如何发球和接球' -// 实现自己的speak()方法 输出'乒乓球教练说英语' -class PingPangCoach extends Coach implements SpeakEnglish { - /********* begin *********/ - public PingPangCoach() { - } - - public PingPangCoach(String name, int age) { - super(name, age); - } - - public void eat() { - System.out.println("乒乓球教练吃小白菜，喝大米粥"); - } - - public void teach() { - System.out.println("乒乓球教练教如何发球和接球"); - } - - public void speak() { - System.out.println("乒乓球教练说英语"); - } - /********* end *********/ -} - -// 定义篮球教练具体类BasketballCoach 继承自Coach类 不需要继承接口，因为他不需要说英语 -// 无参构造函数 -// 有参构造函数初始化name和age -// 实现自己的eat()方法 输出'篮球教练吃羊肉，喝羊奶' -// 实现自己的teach()方法 输出'篮球教练教如何运球和投篮' -class BasketballCoach extends Coach { - /********* begin *********/ - public BasketballCoach() { - } - - public BasketballCoach(String name, int age) { - super(name, age); - } - - public void eat() { - System.out.println("篮球教练吃羊肉，喝羊奶"); - } - - public void teach() { - System.out.println("篮球教练教如何运球和投篮"); - } - /********* end *********/ +package task3; + +import java.util.Scanner; + +public class Task3 { + public static void main(String[] args) { + Scanner sc = new Scanner(System.in); + String pppName = sc.next(); + int pppAge = sc.nextInt(); + String bpName = sc.next(); + int bpAge = sc.nextInt(); + String ppcName = sc.next(); + int ppcAge = sc.nextInt(); + String bcName = sc.next(); + int bcAge = sc.nextInt(); + // 测试运动员(乒乓球运动员和篮球运动员) + // 乒乓球运动员 + // 通过带参构造函数实例化PingPangPlayer对象ppp + // 输出'name---age' + // 分别调用sleep()、eat()、study()、speak()方法 + /********* begin *********/ + PingPangPlayer ppp = new PingPangPlayer(pppName, pppAge); + System.out.println(ppp.getName() + "---" + ppp.getAge()); + ppp.sleep(); + ppp.eat(); + ppp.study(); + ppp.speak(); + /********* end *********/ + System.out.println("----------------"); + // 篮球运动员 + // 通过带参构造函数实例化BasketballPlayer对象bp + // 输出'name---age' + // 分别调用sleep()、eat()、study()方法 + /********* begin *********/ + BasketballPlayer bp = new BasketballPlayer(bpName, bpAge); + System.out.println(bp.getName() + "---" + bp.getAge()); + bp.sleep(); + bp.eat(); + bp.study(); + /********* end *********/ + System.out.println("----------------"); + // 测试教练(乒乓球教练和篮球教练) + // 乒乓球教练 + // 通过带参构造函数实例化PingPangCoach对象ppc + // 输出'name---age' + // 分别调用sleep()、eat()、teach()、speak()方法 + /********* begin *********/ + PingPangCoach ppc = new PingPangCoach(ppcName, ppcAge); + System.out.println(ppc.getName() + "---" + ppc.getAge()); + ppc.sleep(); + ppc.eat(); + ppc.teach(); + ppc.speak(); + /********* end *********/ + System.out.println("----------------"); + // 篮球教练 + // 通过带参构造函数实例化BasketballCoach对象bc + // 输出'name---age' + // 分别调用sleep()、eat()、teach()方法 + /********* begin *********/ + BasketballCoach bc = new BasketballCoach(bcName, bcAge); + System.out.println(bc.getName() + "---" + bc.getAge()); + bc.sleep(); + bc.eat(); + bc.teach(); + /********* end *********/ + System.out.println("----------------"); + } +} + +// 说英语接口 声明抽象方法speak() +interface SpeakEnglish { + /********* begin *********/ + public abstract void speak(); + /********* end *********/ +} + +// 定义人的抽象类Person 封装name和age +// 无参构造函数 +// 有参构造函数初始化name和age +// 定义具体方法sleep() 输出'人都是要睡觉的' +// 抽象方法eat()（吃的不一样） +abstract class Person { + /********* begin *********/ + private String name; + private int age; + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public int getAge() { + return age; + } + + public void setAge(int age) { + this.age = age; + } + + public Person() { + } + + public Person(String name, int age) { + this.name = name; + this.age = age; + } + + public void sleep() { + System.out.println("人都是要睡觉的"); + } + + public abstract void eat(); + /********* end *********/ +} + +// 定义运动员Player（抽象类）继承自Person类 +// 无参构造函数 +// 有参构造函数初始化name和age +// 运动员学习内容不一样，抽取为抽象 定义抽象方法study() +abstract class Player extends Person { + /********* begin *********/ + public Player() { + } + + public Player(String name, int age) { + super(name, age); + } + + public abstract void study(); + /********* end *********/ +} + +// 定义教练Coach（抽象类）继承自Person类 +// 无参构造函数 +// 有参构造函数初始化name和age +// 教练教的不一样 定义抽象方法teach() +abstract class Coach extends Person { + /********* begin *********/ + public Coach() { + } + + public Coach(String name, int age) { + super(name, age); + } + + public abstract void teach(); + /********* end *********/ +} + +// 定义乒乓球运动员具体类PingPangPlayer 继承自Player类并实现SpeakEnglish类（兵乓球运动员需要说英语） +// 无参构造函数 +// 有参构造函数初始化name和age +// 实现自己的eat()方法 输出'乒乓球运动员吃大白菜，喝小米粥' +// 实现自己的study()方法 输出'乒乓球运动员学习如何发球和接球' +// 实现自己的speak()方法 输出'乒乓球运动员说英语' +class PingPangPlayer extends Player implements SpeakEnglish { + /********* begin *********/ + public PingPangPlayer() { + } + + public PingPangPlayer(String name, int age) { + super(name, age); + } + + public void eat() { + System.out.println("乒乓球运动员吃大白菜，喝小米粥"); + } + + public void study() { + System.out.println("乒乓球运动员学习如何发球和接球"); + } + + public void speak() { + System.out.println("乒乓球运动员说英语"); + } + /********* end *********/ +} + +// 定义篮球运动员具体类BasketballPlayer 继承自Player类 不需要继承接口，因为他不需要说英语 +// 无参构造函数 +// 有参构造函数初始化name和age +// 实现自己的eat()方法 输出'篮球运动员吃牛肉，喝牛奶' +// 实现自己的study()方法 输出'篮球运动员学习如何运球和投篮' +class BasketballPlayer extends Player { + /********* begin *********/ + public BasketballPlayer() { + } + + public BasketballPlayer(String name, int age) { + super(name, age); + } + + public void eat() { + System.out.println("篮球运动员吃牛肉，喝牛奶"); + } + + public void study() { + System.out.println("篮球运动员学习如何运球和投篮"); + } + /********* end *********/ +} + +// 定义乒乓球教练具体类 PingPangCoach 继承自Coach类并实现SpeakEnglish类（兵乓球教练需要说英语） +// 无参构造函数 +// 有参构造函数初始化name和age +// 实现自己的eat()方法 输出'乒乓球教练吃小白菜，喝大米粥' +// 实现自己的teach()方法 输出'乒乓球教练教如何发球和接球' +// 实现自己的speak()方法 输出'乒乓球教练说英语' +class PingPangCoach extends Coach implements SpeakEnglish { + /********* begin *********/ + public PingPangCoach() { + } + + public PingPangCoach(String name, int age) { + super(name, age); + } + + public void eat() { + System.out.println("乒乓球教练吃小白菜，喝大米粥"); + } + + public void teach() { + System.out.println("乒乓球教练教如何发球和接球"); + } + + public void speak() { + System.out.println("乒乓球教练说英语"); + } + /********* end *********/ +} + +// 定义篮球教练具体类BasketballCoach 继承自Coach类 不需要继承接口，因为他不需要说英语 +// 无参构造函数 +// 有参构造函数初始化name和age +// 实现自己的eat()方法 输出'篮球教练吃羊肉，喝羊奶' +// 实现自己的teach()方法 输出'篮球教练教如何运球和投篮' +class BasketballCoach extends Coach { + /********* begin *********/ + public BasketballCoach() { + } + + public BasketballCoach(String name, int age) { + super(name, age); + } + + public void eat() { + System.out.println("篮球教练吃羊肉，喝羊奶"); + } + + public void teach() { + System.out.println("篮球教练教如何运球和投篮"); + } + /********* end *********/ } \ No newline at end of file diff --git a/实验6/src/task4/Cuboid.java b/实验6/src/task4/Cuboid.java index 7b1ccbb..95de375 100755 --- a/实验6/src/task4/Cuboid.java +++ b/实验6/src/task4/Cuboid.java @@ -1,15 +1,15 @@ -//Cuboid.java -package task4; - -public class Cuboid extends Rectangle { - double height; - - public Cuboid(double length, double width, double height) { - super(length, width); - this.height = height; - } - - public double volume() { - return this.length * this.width * this.height; - } -} +//Cuboid.java +package task4; + +public class Cuboid extends Rectangle { + double height; + + public Cuboid(double length, double width, double height) { + super(length, width); + this.height = height; + } + + public double volume() { + return this.length * this.width * this.height; + } +} diff --git a/实验6/src/task4/Rectangle.java b/实验6/src/task4/Rectangle.java index 48286ab..8e4728d 100755 --- a/实验6/src/task4/Rectangle.java +++ b/实验6/src/task4/Rectangle.java @@ -1,24 +1,24 @@ -//Rectangle.java -package task4; - -public class Rectangle { - double length; - double width; - - public double getPerimeter() { - return (this.length + this.width) * 2; - } - - public double getArea() { - return this.length * this.width; - } - - public Rectangle(double length, double width) { - this.length = length; - this.width = width; - } - - public Rectangle() { - this(1.0, 1.0); - } -} +//Rectangle.java +package task4; + +public class Rectangle { + double length; + double width; + + public double getPerimeter() { + return (this.length + this.width) * 2; + } + + public double getArea() { + return this.length * this.width; + } + + public Rectangle(double length, double width) { + this.length = length; + this.width = width; + } + + public Rectangle() { + this(1.0, 1.0); + } +} diff --git a/实验6/src/task4/Test.java b/实验6/src/task4/Test.java index 071a08e..7369ab8 100755 --- a/实验6/src/task4/Test.java +++ b/实验6/src/task4/Test.java @@ -1,20 +1,20 @@ -//Test.java -package task4; - -public class Test { - public static void main(String[] args) { - Rectangle r1 = new Rectangle(3, 4); - System.out.println("r1's perimeter:\t" + r1.getPerimeter()); - System.out.println("r1's area:\t" + r1.getArea()); - System.out.println("__________________________________"); - Rectangle r2 = new Rectangle(); - System.out.println("r2's perimeter:\t" + r2.getPerimeter()); - System.out.println("r2's area:\t" + r2.getArea()); - System.out.println("__________________________________"); - Cuboid c = new Cuboid(3, 4, 5); - System.out.println("bottom of c's perimeter:\t" + c.getPerimeter()); - System.out.println("bottom c's area:\t" + c.getArea()); - System.out.println("c's volume:\t" + c.volume()); - } - -} +//Test.java +package task4; + +public class Test { + public static void main(String[] args) { + Rectangle r1 = new Rectangle(3, 4); + System.out.println("r1's perimeter:\t" + r1.getPerimeter()); + System.out.println("r1's area:\t" + r1.getArea()); + System.out.println("__________________________________"); + Rectangle r2 = new Rectangle(); + System.out.println("r2's perimeter:\t" + r2.getPerimeter()); + System.out.println("r2's area:\t" + r2.getArea()); + System.out.println("__________________________________"); + Cuboid c = new Cuboid(3, 4, 5); + System.out.println("bottom of c's perimeter:\t" + c.getPerimeter()); + System.out.println("bottom c's area:\t" + c.getArea()); + System.out.println("c's volume:\t" + c.volume()); + } + +} diff --git a/实验7/src/task1/HelloCollections.java b/实验7/src/task1/HelloCollections.java index 60facad..d2a1398 100644 --- a/实验7/src/task1/HelloCollections.java +++ b/实验7/src/task1/HelloCollections.java @@ -1,12 +1,12 @@ -//HelloCollections.java -package task1; - -import java.util.ArrayList; - -public class HelloCollections { - public ArrayList run() { - ArrayList list = new ArrayList<>(); - list.add("hello, world"); - return list; - } +//HelloCollections.java +package task1; + +import java.util.ArrayList; + +public class HelloCollections { + public ArrayList run() { + ArrayList list = new ArrayList<>(); + list.add("hello, world"); + return list; + } } \ No newline at end of file diff --git a/实验7/src/task1/test.java b/实验7/src/task1/test.java new file mode 100644 index 0000000..ef1d9a3 --- /dev/null +++ b/实验7/src/task1/test.java @@ -0,0 +1,12 @@ +//test.java +package task1; + +import java.util.ArrayList; + +public class test { + public static void main(String[] args) { + HelloCollections h1 = new HelloCollections(); + ArrayList a1 = h1.run(); + System.out.println(a1); + } +} diff --git a/实验7/src/task2/WalkCollection.java b/实验7/src/task2/WalkCollection.java index f344226..5e5e180 100644 --- a/实验7/src/task2/WalkCollection.java +++ b/实验7/src/task2/WalkCollection.java @@ -1,25 +1,25 @@ -package task2; - -import java.util.ArrayList; -import java.util.Iterator; - -public class WalkCollection { - public static void main(String[] args) { - ArrayList arrayListExample = new ArrayList(); - // ---------------------Begin------------------------ - // arrayListExample.add("aaa"); - // arrayListExample.add("bbb"); - // arrayListExample.add("ccc"); - // arrayListExample.add("ddd"); - // 展示运行结果前删下注释 - // 使用迭代器iterator遍历arrayListExample集合 - Iterator itr = arrayListExample.iterator(); - while (itr.hasNext()) { - System.out.println(itr.next()); - } - - // 使用foreach遍历arrayListExample集合 - arrayListExample.forEach(System.out::println); - // ---------------------End------------------------ - } +package task2; + +import java.util.ArrayList; +import java.util.Iterator; + +public class WalkCollection { + public static void main(String[] args) { + ArrayList arrayListExample = new ArrayList(); + // ---------------------Begin------------------------ + // arrayListExample.add("aaa"); + // arrayListExample.add("bbb"); + // arrayListExample.add("ccc"); + // arrayListExample.add("ddd"); + // 展示运行结果前删下注释 + // 使用迭代器iterator遍历arrayListExample集合 + Iterator itr = arrayListExample.iterator(); + while (itr.hasNext()) { + System.out.println(itr.next()); + } + + // 使用foreach遍历arrayListExample集合 + arrayListExample.forEach(System.out::println); + // ---------------------End------------------------ + } } \ No newline at end of file diff --git a/实验7/src/task3/HelloSet.java b/实验7/src/task3/HelloSet.java index 6c1e66d..838f8dd 100644 --- a/实验7/src/task3/HelloSet.java +++ b/实验7/src/task3/HelloSet.java @@ -1,21 +1,21 @@ -package task3; - -import java.util.HashSet; -import java.util.Scanner; - -public class HelloSet { - public static void main(String[] args) { - HashSet hashSet = new HashSet<>(); - Scanner scanner = new Scanner(System.in); - for (int i = 0; i < 5; i++) { - hashSet.add(scanner.next()); - } - // ---------------------Begin------------------------ - hashSet.add("helloHashSet"); - hashSet.remove("cat"); - hashSet.add("fish"); - hashSet.remove("apple"); - // ---------------------End------------------------ - hashSet.forEach(ele -> System.out.println(ele)); - } +package task3; + +import java.util.HashSet; +import java.util.Scanner; + +public class HelloSet { + public static void main(String[] args) { + HashSet hashSet = new HashSet<>(); + Scanner scanner = new Scanner(System.in); + for (int i = 0; i < 5; i++) { + hashSet.add(scanner.next()); + } + // ---------------------Begin------------------------ + hashSet.add("helloHashSet"); + hashSet.remove("cat"); + hashSet.add("fish"); + hashSet.remove("apple"); + // ---------------------End------------------------ + hashSet.forEach(ele -> System.out.println(ele)); + } } \ No newline at end of file diff --git a/实验7/src/task4/HelloHashMap.java b/实验7/src/task4/HelloHashMap.java index 4ddd5c8..bb6ec1d 100644 --- a/实验7/src/task4/HelloHashMap.java +++ b/实验7/src/task4/HelloHashMap.java @@ -1,21 +1,21 @@ -package task4; - -import java.util.HashMap; -import java.util.HashSet; -import java.util.Scanner; - -public class HelloHashMap { - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - HashMap hashMapExample = new HashMap<>(); - for (int i = 0; i < 2; i++) { - hashMapExample.put(scanner.next(), scanner.next()); - } - // ---------------------Begin------------------------ - hashMapExample.put("name", "lihong"); - hashMapExample.remove("firstkey"); - hashMapExample.replace("secondkey", "educode"); - System.out.println(hashMapExample); - // ---------------------End------------------------ - } -} +package task4; + +import java.util.HashMap; +import java.util.HashSet; +import java.util.Scanner; + +public class HelloHashMap { + public static void main(String[] args) { + Scanner scanner = new Scanner(System.in); + HashMap hashMapExample = new HashMap<>(); + for (int i = 0; i < 2; i++) { + hashMapExample.put(scanner.next(), scanner.next()); + } + // ---------------------Begin------------------------ + hashMapExample.put("name", "lihong"); + hashMapExample.remove("firstkey"); + hashMapExample.replace("secondkey", "educode"); + System.out.println(hashMapExample); + // ---------------------End------------------------ + } +}