Java Program To Iterate HashMap Using While And Advance For Loop

Java Program To Iterate HashMap Using While And Advance For Loop 

• Here I am going to explain on how to iterate the hashmap using while and for loop

import java.util.HashMap;

import java.unit.Iterator;

import java.util.Map;

public class HashMapIteration   {

       HashMap<Interger,String>map = new HashMap<Integer,String>( );

       map.put(2, "Ismail");

       map.put(25, "Asha");

       map.put(12, "HashMap");

       Systam.out.println(map.size( ) );

       System.out.println("While Loop:");

       Iterator itr = map.entrySet( ).iterator( );

       while(itr.hasNext( ) )  {

              Map.Entry me = (Map.Entry) itry.next( );

              System.out.println("Key is " + me.getkey + "Value is " + me.getvalue( ) );

   }

   System.out.println("For Loop:");

   for(Map.Entry me2: mao.entrySet( ) )  {

         System.out.println("Key is: "+ me2.getkey( ) + " Value is: " + me2.ge

}

}

}

Output:

3

While Loop:

Key is 2 Value is Ismail

Key is 25 Value is Asha

Key is 12 Value is HashMap

For Loop:

Key is: 2 Value is: Ismail

Key is: 25 Value is: Asha

Key is: 12 Value is: HashMap