Wednesday, 4 June 2014

HashMap : isEmpty : Check whether Map is Empty or not

public boolean isEmpty()
Returns true if this map contains no key-value mappings.

import java.util.*;

class HashMapIsEmpty{
 public static void main(String args[]){
  HashMap<Integer, String> myMap;
  myMap = new HashMap<> ();
  
  System.out.print("Is myMap Empty ");
  System.out.println(myMap.isEmpty());
  
  /* Add Data to myMap */
  myMap.put(100, "Hi");
  myMap.put(25, "How");
  myMap.put(31, "Are");
  
  System.out.print("Is myMap Empty ");
  System.out.println(myMap.isEmpty());
 }
}


Output
Is myMap Empty true
Is myMap Empty false



Prevoius                                                 Next                                                 Home

No comments:

Post a Comment