包a中编写一个类Father,具有属性:年龄(私有)、姓名(公有);具有功能:工作(公有)、开车(公有)。在包a中编写一个子类Son,具有属性:年龄(受保护的)、姓名;具有功能
package a; public class Father { private int age; public String name; private void play(){ System.out.println("兴趣"); } public void Study(){ System.out.println("学习"); } } package b; import a.Father; public class Son extends Father{ protected int age; public String name; private void play(){ System.out.println("游戏"); } public void Study(){ System.out.println("韩语"); } } import a.Father; public class test { public static void main(String[] args) { Father t=new Father(); Son c=new Son(); //t.play();私有 t.Study(); //c.play();私有 c.Study(); } }