This is an example of how to check for an element existence in a LinkedHashSet. We will use the contains(Object o) API method of LinkedHashSet. Checking if an element exists in a LinkedHashSet implies that you should:
- Create a new LinkedHashSet.
- Populate the set with elements, using the
add(E e)API method of LinkedHashSet. - Check if a specific element exists in the set, using
contains(Object o)API method, having the element as parameter. The method returns true if the set contains the specified element.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.LinkedHashSet;
public class ElementExistsLinkedHashSet {
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");
// boolean contains(Object value) method returns true if the LinkedHashSet contains the value, otherwise false.
boolean exists = linkedHashSet.contains("element_2");
System.out.println("element_2 exists in LinkedHashSet ? : " + exists);
}
}
Output:
element_2 exists in LinkedHashSet ? : true
This was an example of how to check for an element existence in a LinkedHashSet in Java.
