标签：Outer 内部 void class new public out
内部类
package com.andy.base.oop.demo01.demo10;
public class Outer {
private int id;
public void out(){
System.out.println("这是外部类的方法");
}
public class Inner{
public void in(){
System.out.println("这是内部类的方法");
}
}
}
/*
public static void main(String[] args) {
Outer outer = new Outer();
//通过这个外部类来实例化内部类~
Outer.Inner inner = outer.new Inner();
inner.in();
}
*/
package com.andy.base.oop.demo01.demo10;
import java.applet.Applet;
public class Test {
public static void main(String[] args) {
//没有名字初始化类，不用讲实例保存到变量中~
new Apple().eat();
new UserService(){
@Override
public void hello() {
}
};
}
}
class Apple{
public void eat(){
System.out.println("1");
}
}
interface UserService{
void hello();
}
标签：Outer,
内部,
void,
class,
new,
public,
out
From： https://www.cnblogs.com/zhongjianYuan/p/17166389.html