Initial commit

Experiment/src/Exp3/Task1/Test1.java

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+package Exp3.Task1;
+
+public class Test1 {
+    public static void main(String[] args) {
+        Rectangle rect1 = new Rectangle(5, 3);
+        System.out.println("矩形1周长: " + rect1.getC());
+        System.out.println("矩形1面积: " + rect1.getArea());
+
+        Rectangle rect2 = new Rectangle(1, 6, 6, 2);
+        System.out.println("矩形2周长: " + rect2.getC());
+        System.out.println("矩形2面积: " + rect2.getArea());
+    }
+}