面试题((A)null).fun()——java中null值的强转

面试题分享

public class A {public static void fun1() {
        System.out.println("fun1");
    }

    public void fun2() {
        System.out.println("fun2");
    }

    public static void main(String[] args) {
        ((A) null).fun1();
        ((A) null).fun2();
    }
}public class A {public static void fun1() {