map的entrySet演示

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

public class map {
	public static void main(String[] args){
		Map<Integer,String> map = new HashMap<Integer,String>();
		method_3(map);
	}

	public static void method_3(Map<Integer,String> map){
		map.put(3, "xiaoming");
		map.put(8, "xiaoqiang");
		map.put(5, "dazhang");
		map.put(9, "wuming");
		
		Set<Map.Entry<Integer, String>> entryset = map.entrySet();
		Iterator<Map.Entry<Integer, String>> it = entryset.iterator();
		
		while(it.hasNext()){
			Map.Entry<Integer, String> me = it.next();
			Integer key = me.getKey();
			String value = me.getValue();
			System.out.println(key+"::"+value);
		}
	}
}