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