Syntax error Remove an element from IdentityHashMap in Java

Remove an element from IdentityHashMap in Java

Use the remove() method to remove an element from IdentityHashMap.

Let us create IdentityHashMap and add some elements

Map<String, Integer> m = new IdentityHashMap<String, Integer>();
m.put("1", 100);
m.put("2", 200);
m.put("3", 300);
m.put("4", 150);
m.put("5", 110);
m.put("6", 50);
m.put("7", 90);
m.put("8", 250);
m.put("9", 350);
m.put("10", 450);

Let’s say you need to remove 2 from the Map. For that, use the remove() method

m.remove("2");

The following is an example to remove an element from Java IdentityHashMap

Example

 Live Demo

import java.util.*;
public class Demo {
   public static void main(String[] args) {
      Map<String, Integer> m = new IdentityHashMap<String, Integer>();
      m.put("1", 100);
      m.put("2", 200);
      m.put("3", 300);
      m.put("4", 150);
      m.put("5", 110);
      m.put("6", 50);
      m.put("7", 90);
      m.put("8", 250);
      m.put("9", 350);
      m.put("10", 450);
      System.out.println("IdentityHashMap elements\n"+ m);
      m.remove("2");
      System.out.println("\nUpdated IdentityHashMap elements\n"+ m);
   }
}

The output is as follows

IdentityHashMap elements
{2=200, 4=150, 9=350, 7=90, 10=450, 6=50, 5=110, 8=250, 1=100, 3=300}
Updated IdentityHashMap elements
{4=150, 9=350, 7=90, 10=450, 6=50, 5=110, 8=250, 1=100, 3=300}
Updated on: 2019-07-30T22:30:24+05:30

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