Set remove() method in Java with Examples
The java.util.Set.remove(Object O) method is used to remove a particular element from a Set.
Syntax:
boolean remove(Object O)
Parameters: The parameter O is of the type of element maintained by this Set and specifies the element to be removed from the Set.
Return Value: This method returns True if the specified element is present in the Set otherwise it returns False.
Below program illustrate the java.util.Set.remove(Object O) method:
// Java code to illustrate Set.remove() method import java.util.*; public class SetDemo { public static void main(String args[]) { // Creating an empty Set Set<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 Set System.out.println("Set: " + set); // Removing elements using remove() method set.remove("Geeks"); set.remove("4"); set.remove("Welcome"); // Displaying the Set after removal System.out.println("Set after removing elements: " + set); }} |
Output:
Set: [4, Geeks, Welcome, To] Set after removing elements: [To]
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#remove(java.lang.Object)
