上传了实验三,已确认无敏感信息

实验3/src/test4/test.java

@@ -0,0 +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());
+    }
+}