内部类

package oop.Test09;

import oop.Test08.UserService;

public class Test {
public static void main(String[] args) {
//没有名字初始化，不用把实例保存到变量中
new Apple().eat();
UserService userService=new UserService(){

@Override
public void run(String name) {

}

@Override
public void delete(String name) {

}

@Override
public void update(String name) {

}

@Override
public void query(String name) {

}
};
}
}
class Apple{
public void eat(){
System.out.println("1");
}
}