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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.
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