Create LinkedHashSet in Java - How to Add Elements to LinkedHashset

Published April 04, 2022


To create a LinkedHashSet set, you first need to import the Java.util.LinkedHashSet  package in your Java program. After you have imported the package, now you can create a LinkedHashSets using the Syntax below:

LinkedHashSet<Integer> sample = new LinkedHashSet<>

 

This syntax has two parameters. The first parameter is the capacity, and the second parameter is the LoadFactor.

The Methods Supported by The LinkedHashSet

The LinkedHashSet class provides a number of methods that enable various operations to be performed on a linked Hash Set. These methods include:

  • remove()- The element specified will be removed from LinkedHashSet using this method.

  • removeAll()- This method removes  all values from  LinkedHashSet

  • addAll()- Performs a union between two sets

  • retainAll()- This method Intersects the two sets

  • next()-returns the next elements in the LinkedHashSet

  • hasNext()- returns true whenever there is a next element in the LinkedHashSet

  • add()- inserts  a specific element  into the LinkedHashSet

  • addAll()-  inserts all the elements of the specified collection of the LinkedHashSet.

 

Add Elements to LinkedHashSet

In this example, we are going to insert an element into the LinkedHashSet.

import java.util.LinkedHashSet;

public class LinkedHashExample {

    public static void main(String[] args) {   

        LinkedHashSet<Integer> originalLHS = new LinkedHashSet<>();

        // Create a LinkedHashExample using add() method

        originalLHS.add(1);

        originalLHS.add(2);

        originalLHS.add(3);

        System.out.println("Original LinkedHashSet: " + originalLHS);

        LinkedHashSet<Integer> AddedLHS = new LinkedHashSet<>();

        // Now we add a new element Using addAll() method

        AddedLHS.addAll(originalLHS);

        AddedLHS.add(4);

        System.out.println("New LinkedHashSet After Inserting Element: " + AddedLHS);

    }

}

 

Output:

Original LinkedHashSet: [1, 2, 3]

New LinkedHashSet After Inserting Element: [1, 2, 3, 4]


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