java 容器

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package dplearn;import java.util.ArrayList;import java.util.Iterator;import java.util.List;public class Learn {public static void main(String[] args){List myList=new ArrayList();Basicinfo myBasic=new Basicinfo("虎头牌笔记本",3.5f,"red");    myList.add(myBasic);myBasic=new Basicinfo("A4纸",3.5f,"white");    myList.add(myBasic);myBasic=new Basicinfo("B2铅笔",3.5f,"black");    myList.add(myBasic);    Iterator iterator=myList.iterator();    while (iterator.hasNext()){    Basicinfo bsinfo=(Basicinfo)iterator.next();    System.out.println(bsinfo.info());    }}}

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package dplearn;public class Basicinfo {String name;float price;String color;public Basicinfo(){name="";    price=0;    color="";}public Basicinfo(String name,float price,String color){this.name=name;this.price=price;this.color=color;}public String info(){return this.name+"=>"+this.price+"=>"+this.color;}}

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