Java Collection Tutorial - Java IdentityHashMap.remove(Object key)


IdentityHashMap.remove(Object key) has the following syntax.

public V remove(Object key)


In the following code shows how to use IdentityHashMap.remove(Object key) method.

// w  w w  . j a  v a  2  s  .c  o  m
import java.util.IdentityHashMap;

public class Main {
   public static void main(String args[]) {

      IdentityHashMap<Integer,String> ihmap = new IdentityHashMap<Integer,String>();

      ihmap.put(1, "from");
      ihmap.put(2, "");
      ihmap.put(3, "tutorial");
      System.out.println("Value of ihmap before: " + ihmap);
      // remove element at key 2
      System.out.println("Value of ihmap after remove: " + ihmap);

The code above generates the following result.