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:
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | 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 elementsLinkedHashMap linkedHashMap = new LinkedHashMap();linkedHashMap.put("key_1","value_1");linkedHashMap.put("key_2","value_2");linkedHashMap.put("key_3","value_3");System.out.println("LinkedhashMap contains : " + linkedHashMap);// void clear method() removes all mappings of LinkedHashMap classlinkedHashMap.clear();System.out.println("LinkedhashMap contains : " + linkedHashMap); }} |
Output:
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.
