Map集合的遍历方法
package it.com.cc.five;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class MapTest {

public static void main(String[] args) {
        Map<String,String> map=new HashMap<String,String>();
    map.put("成功","失败");
    map.put("贫穷","富贵");
    map.put("勤奋","学习");
    Set<Map.Entry<String,String>> entrySet= map.entrySet();
    for (Map.Entry<String,String> me:entrySet){
        String key=me.getKey();
        String value = me.getValue();
        System.out.println(key+","+value);`
    }
}

}`