Java—Map.Entry

 

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map.Entry; 

import java.util.Map; 

 

public class hello {

public static void main(String[] args){

hashMapTest();

 

}

 

public static void hashMapTest() {

System.out.println("----------------hashMapTest---------------");

 

Map<String,String> map1 = new HashMap<String,String>(); 

map1.put("1", "A");

map1.put("2", "B");

map1.put("3", "C");

map1.put("4", "D");

map1.put("5", "E");

map1.put("6", "F");

 

Iterator<Entry<String, String>> it = map1.entrySet().iterator();

while(it.hasNext()){

Map.Entry<String,String> e = (Map.Entry<String,String>) it.next();

System.out.println(e.getKey() + " ： " + e.getValue()); 

}

 

System.out.println(map1);

}

}