In this example we shall show you how to get the size of a LinkedHashSet, that is the number of the elements that a LinkedHashSet contains. To get the size of a LinkedHashSet one should perform the following steps:
- Create a new LinkedHashSet.
- Populate the set with elements, using the
add(E e)API method of LinkedHashSet. - Invoke the
size()API method of LinkedHashSet to get the number of elements in this set. - Remove an element from the set, with
remove(Object o)API method and then check its size again,
as described in the code snippet below.
package com.javacodegeeks.snippets.core;
import java.util.LinkedHashSet;
public class LinkedHashSetSize {
public static void main(String[] args) {
// Create a LinkedHashSet and populate it with elements
LinkedHashSet linkedHashSet = new LinkedHashSet();
linkedHashSet.add("element_1");
linkedHashSet.add("element_2");
linkedHashSet.add("element_3");
// int size() method returns the number of elements in the LinkedHashSet
System.out.println("Size of LinkedHashSet : " + linkedHashSet.size());
// Remove one element from the LinkedHashSet using remove method
linkedHashSet.remove("element_2");
System.out.println("Size of LinkedHashSet : " + linkedHashSet.size());
}
}
Output:
Size of LinkedHashSet : 3
Size of LinkedHashSet : 2
This was an example of how to get the size of a LinkedHashSet in Java.
