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();
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 class
linkedHashMap.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.
