ADVERTISEMENT
ADVERTISEMENT

Java program to remove an item from HashSet collection

Java example to remove an item from HashSet collection.
Submitted by Nidhi, on May 10, 2022

Problem Solution:

Given a HashSet collection, we have to remove an item from HashSet collection.

Program/Source Code:

The source code to remove an item from HashSet collection is given below. The given program is compiled and executed successfully.

// Java program to remove an item from 
// HashSet collection

import java.util.*;

public class Main {
  public static void main(String[] args) {
    HashSet < Integer > nums = new HashSet();

    nums.add(1);
    nums.add(2);
    nums.add(3);
    nums.add(4);
    nums.add(5);
    nums.add(6);

    System.out.println("Set elements: " + nums);

    if (nums.remove(5)) //return true on successful removal.
      System.out.println("Item 5 removed from 'nums' Set successfully.");
    else
      System.out.println("Item 5 is not removed from 'nums' Set.");

    System.out.println("Set elements after removing item 5: " + nums);
  }
}

Output:

Set elements: [1, 2, 3, 4, 5, 6]
Item 5 removed from 'nums' Set successfully.
Set elements after removing item 5: [1, 2, 3, 4, 6]

Explanation:

In the above program, we imported the "java.util.*" package to use the HashSet collection. Here, we created a public class Main that contains a main() method.

The main() method is the entry point for the program. Here, we created a set nums to store integer data elements using HashSet collection. Then we added some elements to the set using add() method. After that, we removed item 5 from the HashSet collection using the remove() method and printed the updated set.

The remove() method returns true on successful removal of a specified item, otherwise, it returns false.

Java HashSet Programs »


ADVERTISEMENT


ADVERTISEMENT


Comments and Discussions!



ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT

Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing
» Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates

© https://www.includehelp.com some rights reserved.