HashMap In Java Example

Chapter: Collections Last Updated: 21-07-2016 18:28:35 UTC

Program:

            /* ............... START ............... */
                
import java.util.HashMap;
import java.util.Map;

public class JavaHashMapExample {
	public static void main(String args[]){  
		   
		  HashMap<Integer,String> hashMap=new HashMap<Integer,String>();  
		  
		  hashMap.put(1,"Anson");  
		  hashMap.put(2,"Jane");  
		  hashMap.put(3,"Harry");  
		  
		  for(Map.Entry m:hashMap.entrySet()){  
		   System.out.println(m.getKey()+" "+m.getValue());  
		  }  
		 }  
}
                /* ............... END ............... */
        

Output

1 Anson
2 Jane
3 Harry

Notes:

  • HashMap contains values based on the key. It implements the Map interface and extends AbstractMap class.
  • HashMap maintains no order.

Tags

Collection, HashMap, Java

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