java 通过Iterator输出Map

package test;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;

public class test {
public static void main(String[] args)  {
Map<String,String> map=new HashMap<String,String>();
map.put("Zhukai","is_a_2HUO!");
map.put("LiJunDong","is_a_2HUO_too!");
map.put("WoZiji","is_not_2HUO!");
Set<Map.Entry<String, String>> allSet=map.entrySet();

Iterator<Map.Entry<String, String>> iter=allSet.iterator();
while(iter.hasNext()){
Map.Entry<String, String> me=iter.next();
System.out.println(me.getKey()+ " "+me.getValue());
}

}
}