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JavaʵÏÖ½«Mapת»»ÎªListµÄС´úÂë

import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.Iterator; 
import java.util.List; 
import java.util.Map; 
public class ConvertMapToList {
    /**
     * ʵÏÖ½«HashMapת»»³ÉΪArrayList£¬²¢½«mapµÄKey ¡¢Value·Ö±ð´æ·Åµ½Á½¸öArrayListµ±ÖÐ
     * @param args
     */
    public static void main(String[] args) {
        Map map = new HashMap();
        map.put("a", "a1");
        map.put("b", "b1");
        map.put("c", "c1");
        List listKey = new ArrayList();
        List listValue = new ArrayList();
        Iterator it = map.keySet().iterator();
        while (it.hasNext()) {
            String key = it.next().toString();
            listKey.add(key);
            listValue.add(map.get(key));
        }
        System.out.println("Convert Finished !");
        
        //output the context of the ArrayList
        for(int i =0 ;i<listKey.size();i++){
            System.out.print("Key :"+listKey.get(i));
            System.out.println("     Value :"+listValue.get(i));
        }
    }
}


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3.´ÓmapÖÐȡֵ:String str = map.get("sa").toString();½á¹ûÊÇ:str = "dd";
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