The Java.util.HashSet.remove(Object O) method is used to remove a particular element from a HashSet.
Syntax:
HashSet.remove(Object O)
Parameters: The parameter O is of the type of HashSet and specifies the element to be removed from the HashSet.
Return Value: This method returns True if the specified element is present in the HashSet otherwise it returns False.
Below program illustrate the Java.util.HashSet.remove(Object O) method:
// Java code to illustrate HashSet.remove() method import java.util.*; import java.util.HashSet; public class HashSetDemo { public static void main(String args[]) { // Creating an empty HashSet HashSet<String> set = new HashSet<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 HashSet System.out.println( "HashSet: " + set); // Removing elements using remove() method set.remove( "Geeks" ); set.remove( "4" ); set.remove( "Welcome" ); // Displaying the HashSet after removal System.out.println( "HashSet after removing elements: " + set); } } |
HashSet: [4, Geeks, Welcome, To] HashSet after removing elements: [To]
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