[java] 자바 map 활용

 

 

 

 

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출처: 

http://blog.naver.com/popori1100?Redirect=Log&logNo=130074419880

import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Set;  public class HashMapExample {      public static void main(String[] args) {          HashMap<Object,String> hm=new HashMap<Object,String>();          // adding or set elements in HashMap by put method key and value pair         hm.put(new Integer(2), "Two");         hm.put(new Integer(1), "One");         hm.put(new Integer(3), "Three");         hm.put(new Integer(4), "Four");          // Get hashmap in Set interface to get key and value         Set s=hm.entrySet();          // Move next key and value of HashMap by iterator         Iterator it=s.iterator();          while(it.hasNext())         {             // key=value separator this by Map.Entry to get key and value             Map.Entry m =(Map.Entry)it.next();              // getKey is used to get key of HashMap             int key=(Integer)m.getKey();              // getValue is used to get value of key in HashMap             String value=(String)m.getValue();              System.out.println("Key :"+key);             System.out.println("value :"+value);         }     } } 

Output

Key :1
value :One
Key :2
value :Two
Key :3
value :Three
Key :4
value :Four

[출처] Java – HashMap Example|작성자 popori1100

 

 

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