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LinkedHashSet toArray() method in Java with Example

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  • Difficulty Level : Medium
  • Last Updated : 24 Dec, 2018
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The toArray() method of Java LinkedHashSet is used to form an array of the same elements as that of the LinkedHashSet. Basically, it copies all the element from a LinkedHashSet to a new array.

Syntax:

Object[] arr = LinkedHashSet.toArray()

Parameters: The method does not take any parameters.

Return Value: The method returns an array containing the elements similar to the LinkedHashSet.

Below programs illustrate the LinkedHashSet.toArray() method:

Program 1:




// Java code to illustrate toArray()
  
import java.util.*;
  
public class LinkedHashSetDemo {
    public static void main(String args[])
    {
        // Creating an empty LinkedHashSet
        LinkedHashSet<String>
            set = new LinkedHashSet<String>();
  
        // Use add() method to add
        // elements into the LinkedHashSet
        set.add("Welcome");
        set.add("To");
        set.add("Geeks");
        set.add("For");
        set.add("Geeks");
  
        // Displaying the LinkedHashSet
        System.out.println("The LinkedHashSet: "
                           + set);
  
        // Creating the array and using toArray()
        Object[] arr = set.toArray();
  
        System.out.println("The array is:");
        for (int j = 0; j < arr.length; j++)
            System.out.println(arr[j]);
    }
}

Output:

The LinkedHashSet: [Welcome, To, Geeks, For]
The array is:
Welcome
To
Geeks
For

Program 2:




// Java code to illustrate toArray()
  
import java.util.*;
  
public class LinkedHashSetDemo {
    public static void main(String args[])
    {
        // Creating an empty LinkedHashSet
        LinkedHashSet<Integer>
            set = new LinkedHashSet<Integer>();
  
        // Use add() method to add
        // elements into the LinkedHashSet
        set.add(10);
        set.add(15);
        set.add(30);
        set.add(20);
        set.add(5);
        set.add(25);
  
        // Displaying the LinkedHashSet
        System.out.println("The LinkedHashSet: "
                           + set);
  
        // Creating the array and using toArray()
        Object[] arr = set.toArray();
  
        System.out.println("The array is:");
        for (int j = 0; j < arr.length; j++)
            System.out.println(arr[j]);
    }
}

Output:

The LinkedHashSet: [10, 15, 30, 20, 5, 25]
The array is:
10
15
30
20
5
25

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