Java 內部類Demo

package com.ceno.wlzhao.inner;

/**
 * Created by IntelliJ IDEA.
 * User: wlzhao
 * Date: 11-1-25
 * Time: 下午3:54
 * To change this template use File | Settings | File Templates.
 */
public class Parcell {
    class Contents{
        private  int i = 11;
        public int value(){
            return i;
        }
    }
    class Destination{
        private String label;
        Destination(String whereTo){
            label = whereTo;
        }
        String readlabel(){
            return label;
        }
        // 產生對外部類的對象引用。
        Parcell getParcell(){
            return Parcell.this;
        }
    }
    // 返回引用
    public Destination getDest(){
        return new Destination("Haa");
    }
    public void ship(String dest){
        Contents c = new Contents();
        Destination d = new Destination(dest);
        System.out.println(d.readlabel());
    }
    public static void main(String[] args){
        Parcell p = new Parcell();
        p.ship("Haa");
        Destination d =  p.getDest();
        System.out.println(d.readlabel());
        // 引用
//        Parcell.Contents c = p.getDest(); 這樣的常規思維不行
        Parcell.Contents c = p.new Contents();

    }
}