Remove value from Java HashMap example

This Java Example shows how to remove a key value pair from HashMap object using remove method.

import java.util.HashMap;

public class RemoveValueFromHashMapExample {

 public static void main(String[] args) {

  // create HashMap object
  HashMap hMap = new HashMap();

  // add key value pairs to HashMap
  hMap.put("1", "One");
  hMap.put("2", "Two");
  hMap.put("3", "Three");

  /**
   * To remove a key value pair from HashMap use Object remove(Object key)
   * method of HashMap class. It returns either the value mapped with the
   * key or null if no value was mapped.
   **/

  Object obj = hMap.remove("2");
  System.out.println(obj + " Removed from HashMap");

 }
}

The output is:


Two Removed from HashMap