遍历HashMap

package com.xiaoer.javaSEstudy;

import java.util.HashMap;
import java.util.Map;

import org.junit.Test;

public class TestHashMapIterator {
	
	@Test
	public void testEntrySet(){
		Map<String, String> map = new HashMap<String, String>();
		map.put("1", "王宁");
		map.put("2", "王寒");
		map.put("3", "王慧");
		
		for(Map.Entry<String, String> entry:map.entrySet()){
			System.out.println("key:"+entry.getKey()+",value:"+entry.getValue());
		}
	}
	
	@Test
	public void testKeySet(){
		Map<String, String> map = new HashMap<String, String>();
		map.put("1", "王宁");
		map.put("2", "王寒");
		map.put("3", "王慧");
		
		for(String key:map.keySet()){
			System.out.println("key:"+key+",value:"+map.get(key));
		}
	}

}