LinkedHashSet contains() method in Java
The Java.util.LinkedHashSet.contains() method is used to check whether a specific element is present in the LinkedHashSet or not. So basically it is used to check if a Set contains any particular element.
Syntax:
Hash_Set.contains(Object element)
Parameters: The parameter element is of the type of LinkedHashSet. This is the element that needs to be tested if it is present in the set or not.
Return Value: The method returns true if the element is present in the set else return False.
Below program illustrate the Java.util.LinkedHashSet.contains() method:
// Java code to illustrate LinkedHashSet.contains() method 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>(); // Using 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 "Geeks" in the set System.out.println( "Does the Set contains 'Geeks'? " + set.contains( "Geeks" )); // Check for "4" in the set System.out.println( "Does the Set contains '4'? " + set.contains( "4" )); // Check if the Set contains "No" System.out.println( "Does the Set contains 'No'? " + set.contains( "No" )); } } |
Output:
LinkedHashSet: [Welcome, To, Geeks, 4] Does the Set contains 'Geeks'? true Does the Set contains '4'? true Does the Set contains 'No'? false