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)
