内部类

package Demo10;

import java.applet.Applet;

public class Test {
public static void main(String[] args) {
//没有名字初始化类，不用将实例保存到变量中
new Apple().eat();
new Uservice(){
@Override
public void hello() {

        }
    };
}

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

import Demo10.Outer;

public class Application {
public static void main(String[] args) {
//外部类 new
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.getID();


}

}