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Showing content from https://www.geeksforgeeks.org/java/sortedset-toarray-method-in-java-with-examples/ below:

SortedSet toArray() method in Java with Examples

Last Updated : 12 Jul, 2025

The

toArray()

method of

Java SortedSet

is used to form an array of the same elements as that of the SortedSet. Basically, it copies all the element from a SortedSet to a new array.

Syntax:

Object[] toArray()

Parameters:

The method does not take any parameters.

Return Value:

The method returns an

array

containing the elements similar to the SortedSet.

Note

: The toArray() method in

SortedSet

is inherited from the

Set interface

in Java. Below programs illustrate the SortedSet.toArray() method:

Program 1: Java


 // Java code to illustrate toArray()

import java.util.*;

public class SortedSetDemo {
    public static void main(String args[])
    {

        // Creating an empty SortedSet
        SortedSet<String> abs_col
            = new TreeSet<String>();

        // Use add() method to add
        // elements into the SortedSet
        abs_col.add("Welcome");
        abs_col.add("To");
        abs_col.add("Geeks");
        abs_col.add("For");
        abs_col.add("Geeks");

        // Displaying the Set
        System.out.println("The SortedSet: "
                           + abs_col);

        // Creating the array and using toArray()
        Object[] arr = abs_col.toArray();

        System.out.println("The array is:");
        for (int j = 0; j < arr.length; j++)
            System.out.println(arr[j]);
    }
}

Output:

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

Program 2: Java


 // Java code to illustrate toArray()

import java.util.*;

public class SetDemo {
    public static void main(String args[])
    {
        // Creating an empty SortedSet
        SortedSet<Integer> abs_col
            = new TreeSet<Integer>();

        // Use add() method to add
        // elements into the SortedSet
        abs_col.add(10);
        abs_col.add(15);
        abs_col.add(30);
        abs_col.add(20);
        abs_col.add(5);
        abs_col.add(25);

        // Displaying the SortedSet
        System.out.println("The SortedSet: "
                           + abs_col);

        // Creating the array and using toArray()
        Object[] arr = abs_col.toArray();

        System.out.println("The array is:");
        for (int j = 0; j < arr.length; j++)
            System.out.println(arr[j]);
    }
}

Output:

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

Reference

https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#toArray()

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