package TcmStudy.day20;class Fu{// public int num01 = 3;public int num = 3;}class Zi extends Fu{// public int num02 = 4;public int num = 4;public void show(){// System.out.println("num01:" + num01);//父类的属性// System.out.println("num02:" + num02);//子类的属性//子类方法中 如果出现子类和父类同名属性 优先使用子类的属性 方法类似// super是Fu类 this属于Zi类的对象System.out.println("父类num=:" + super.num);// 父类的numSystem.out.println("子类num=:" + this.num);// 子类的num}}public class ExtendDemo02 {public static void main(String[] args) {Zi z = new Zi();z.show();}}
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