test.java

加密解密技巧

package zuoye.entity;

import zuoye.entity.*;

public class Test {
	public static void main(String[] args) {
		Shape[] shapes = new Shape[3];
		Round round = new Round(4);
		
		Rec rec = new Rec();
		rec.setS1(4);
		rec.setS2(6);
		
		Triangle tri = new Triangle(3,4,5);
		
		shapes[0] = round;
		shapes[1] = rec;
		shapes[2] = tri;
		
		for (int i = 0; i < shapes.length; i++) {
			System.out.println(shapes[i].girth());
			shapes[i].area();
			System.out.println("************");
		}

	}

}