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 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 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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