上传了实验六,已确认无敏感信息

实验6/src/task4/Cuboid.java

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+//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;
+    }
+}

实验6/src/task4/Rectangle.java

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+//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);
+    }
+}

实验6/src/task4/Test.java

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+//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());
+    }
+
+}