匿名内部类

public class TestThread3{
        //静态方法
        public static void S(ServiceOut s){
            s.out();
        }

        public static void main(String []args){
           S(new Host());
        }

}
//接口
interface ServiceOut{
        void out();
}
/*编写一个退出实现类*/
class Host implements ServiceOut{
    @Override
    public void out() {
        System.out.println("電腦登陸失敗");
    }
}