遍历Map的一些方法

package org.wiksys.day02;

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

public class TestIteratroMap {

	/**
	 * @author wiksys
	 * @param args
	 * 迭代Map
	 */
	public static void main(String[] args) {
		Map<String,String> map=new HashMap<String,String>();
		map.put("1", "tom");
		map.put("2", "jerry");
		map.put("3", "wiksys");
		iteratorMapKey(map);
	}

	/**
	 * 键值一起迭代出来
	 * @param map
	 */
	public static void iteratorMapUsingEntrySetAndIterator(
			Map<String, String> map) {
		Set set=map.entrySet();
		Iterator it=set.iterator();
		while(it.hasNext()){
			System.out.println(it.next());
		}
	}

	/**
	 * 迭代值
	 * @param map
	 */
	public static void iteratorMapValues(Map<String, String> map) {
		Collection co=map.values();
		Iterator it=co.iterator();
		while(it.hasNext()){
			System.out.println(it.next());
		}
	}

	/**
	 * 迭代键，根据键值获得value
	 * @param map
	 */
	public static void iteratorMapKey(Map<String, String> map) {
		Set<String> sets=map.keySet();
		
		for (String string : sets) {
			String str=string;
			System.out.println(string);
			System.out.println(map.get(str));
		}
	}

	/**
	 * 根据entrySet获得set然后超强for循环遍历
	 * @param map
	 */
	public static void iteratorMapUsingEntrySet(Map<String, String> map) {
		Set set=map.entrySet();
		
		for (Object object : set) {
			System.out.println(object);
		}
	}

}