instanceof 父类子类
结论:
- 子类 instanceof 父类 == true
- 父类 instanceof 子类 == false
public class Test { public static void main(String[] args) { //instanceof 父类子类 Father father1 = new Father(); System.out.println(father1 instanceof Father ); //ture System.out.println(father1 instanceof Son ); //false Father father2 = new Son(); System.out.println(father2 instanceof Father ); //ture System.out.println(father2 instanceof Son ); //ture Son son = new Son(); System.out.println(son instanceof Father ); //ture System.out.println(son instanceof Son ); //ture } }