How to create a Set of integers in Java - Step by Step Examples

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How to create a Set of integers in Java ?

Answer

To create a set of integers in Java, you can use the HashSet class from the java.util package.

✐ Examples

1 Create a Set of Integers using HashSet

In this example,

We import the HashSet class from the java.util package.
We create a HashSet object named intSet to store integers.
We use the add() method to add integers to the set.

Java Program

import java.util.HashSet;
import java.util.Set;

public class Main {
    public static void main(String[] args) {
        Set<Integer> intSet = new HashSet<>();
        intSet.add(1);
        intSet.add(2);
        intSet.add(3);
        intSet.add(4);
        intSet.add(5);
        System.out.println("Set of integers: " + intSet);
    }
}

Output

Set of integers: [1, 2, 3, 4, 5]

Summary

In this tutorial, we learned How to create a Set of integers in Java language with well detailed examples.