The Java.util.LinkedHashSet.isEmpty() method is used to check if a LinkedHashSet is empty or not. It returns True if the LinkedHashSet is empty otherwise it returns False.
Syntax:
Linked_Hash_Set.isEmpty()
Parameters: This method does not take any parameter
Return Value: The function returns True if the set is empty else returns False.
Below program illustrate the Java.util.LinkedHashSet.isEmpty() method:
Java
// Java code to illustrate isEmpty() import java.io.*;
import java.util.LinkedHashSet;
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 Set
set.add( "Welcome" );
set.add( "To" );
set.add( "Geeks" );
set.add( "4" );
set.add( "Geeks" );
// Displaying the LinkedHashSet
System.out.println( "LinkedHashSet: " + set);
// Check for the empty set
System.out.println( "Is the set empty: " + set.isEmpty());
// Clearing the set using clear() method
set.clear();
// Again Checking for the empty set
System.out.println( "Is the set empty: " + set.isEmpty());
}
} |
Output:
LinkedHashSet: [Welcome, To, Geeks, 4] Is the set empty: false Is the set empty: true