Set remove() method in Java with Examples
Last Updated :
31 Dec, 2018
Improve
The java.util.Set.remove(Object O) method is used to remove a particular element from a Set.
Syntax:
Java
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:
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#remove(java.lang.Object)
Set: [4, Geeks, Welcome, To] Set after removing elements: [To]
