题目:
要求不全main方法以及填写Demo01中的输出语句,依次输出30,20,10
笔记:
1、内部类和外部类没有继承关系
2、通过外部类限定this.对象
Demo01.this
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
}
class Demo01{
public int num=10;
class Demo02{
public int num=20;
public void show(){
int num=30;
System.out.println(?);
System.out.println(??);
System.out.println(???);
}
}
}
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package com.gem.demo01;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Demo01.Demo02 de=new Demo01().new Demo02();
de.show();
}
}
class Demo01{
public int num=10;
class Demo02{
public int num=20;
public void show(){
int num=30;
System.out.println(num);
System.out.println(this.num);
//System.out.println(new Demo01().num);
System.out.println(Demo01.this.num);
}
}
}