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Set remove() method in Java with Examples

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  • Difficulty Level : Easy
  • Last Updated : 31 Dec, 2018
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The java.util.Set.remove(Object O) method is used to remove a particular element from a Set.


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
        // Displaying the Set
        System.out.println("Set: " + set);
        // Removing elements using remove() method
        // Displaying the Set after removal
        System.out.println("Set after removing elements: "
                           + set);


Set: [4, Geeks, Welcome, To]
Set after removing elements: [To]


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