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Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Remove all mappings from LinkedHashMap example

This is an example of how to remove all mappings from a LinkedHashMap, that means clearing the LinkedHashMap. Removing all mappings from a LinkedHashMap implies that you should:

  • Create a new LinkedHashMap.
  • Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap.
  • Invoke clear() API method of LinkedHashMap. The method removes all of the mappings from this map. The map will be empty after this call returns.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;
import java.util.LinkedHashMap;
public class ClearLinkedHashMap {
  public static void main(String[] args) {

// Create a LinkedHashMap and populate it with elements

LinkedHashMap linkedHashMap = new LinkedHashMap();




System.out.println("LinkedhashMap contains : " + linkedHashMap);

// void clear method() removes all mappings of LinkedHashMap class


System.out.println("LinkedhashMap contains : " + linkedHashMap);


LinkedhashMap contains : {key_1=value_1, key_2=value_2, key_3=value_3}
LinkedhashMap contains : {}

This was an example of how to remove all mappings from a LinkedHashMap in Java.

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