使用Java 8：

map.entrySet().forEach(entry -> System.out.println(entry.getValue()));

在Java 1.4中尝试：

for( Iterator entries = myMap.entrySet().iterator(); entries.hasNext();){

  Entry entry = (Entry) entries.next();

  System.out.println(entry.getKey() + "/" + entry.getValue());

  //...
}

有几种方法可以迭代地图。请参考以下代码。

使用迭代器接口迭代地图时，必须使用Entry＜K，V＞或entrySet（）。

它看起来像这样：

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

    public class IteratMapDemo{

        public static void main(String arg[]){
            Map<String, String> mapOne = new HashMap<String, String>();
            mapOne.put("1", "January");
            mapOne.put("2", "February");
            mapOne.put("3", "March");
            mapOne.put("4", "April");
            mapOne.put("5", "May");
            mapOne.put("6", "June");
            mapOne.put("7", "July");
            mapOne.put("8", "August");
            mapOne.put("9", "September");
            mapOne.put("10", "Octomber");
            mapOne.put("11", "November");
            mapOne.put("12", "December");

            Iterator it = mapOne.entrySet().iterator();
            while(it.hasNext())
            {
                Map.Entry me = (Map.Entry) it.next();
                //System.out.println("Get Key through While loop = " + me.getKey());
            }
            for(Map.Entry<String, String> entry:mapOne.entrySet()){
                //System.out.println(entry.getKey() + "=" + entry.getValue());
            }

            for (Object key : mapOne.keySet()) {
                System.out.println("Key: " + key.toString() + " Value: " +
                                   mapOne.get(key));
            }
        }
    }

使用Java8，可以使用forEach和lambda表达式迭代Map，

map.forEach((k, v) -> System.out.println((k + ":" + v)));

使用Java 7

Map<String,String> sampleMap = new HashMap<>();
for (sampleMap.Entry<String,String> entry : sampleMap.entrySet()) {
    String key = entry.getKey();
    String value = entry.getValue();

    /* your Code as per the Business Justification  */

}

使用Java 8

Map<String,String> sampleMap = new HashMap<>();

sampleMap.forEach((k, v) -> System.out.println("Key is :  " + k + " Value is :  " + v));

我相信这是最简单的方法。。。

/* For example, this could be a map object */
Map<String, Integer> MAP = new Map<>();

// Do something like put keys/value pairs into the map, etc...
MAP.put("Denver", 35);
MAP.put("Patriots", 14);

/* Then, simply use a for each loop like this to iterate */
for (Object o : MAP.entrySet()) {
    Map.Entry pair = (Map.Entry) o;
    // Do whatever with the pair here (i.e. pair.getKey(), or pair.getValue();
}