How to Convert a Set of Integers to a Set of Strings in Java - Step by Step Examples

How to Convert a Set of Integers to a Set of Strings in Java ?

Answer

In Java, to convert a set of integers to a set of strings, you can use the stream() method along with map() function to transform each integer to a string.

✐ Examples

1 Convert a Set of Integers to a Set of Strings using Stream API

In this example,

We have a set of integers named intSet.
We use the stream() method to obtain a stream of elements from the set.
We use the map() function to apply a transformation to each element of the stream, converting each integer to a string using the toString() method.
We collect the transformed elements into a new set using the collect() method with Collectors.toSet().

Java Program

import java.util.Set;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args) {
        Set<Integer> intSet = Set.of(1, 2, 3, 4, 5);
        Set<String> stringSet = intSet.stream()
                                    .map(Object::toString)
                                    .collect(Collectors.toSet());
        System.out.println("Set of strings: " + stringSet);
    }
}

Output

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

2 Convert a Set of Integers to a Set of Strings using forEach Loop

In this example,

We have a set of integers named intSet.
We create a new set of strings named stringSet.
We iterate through each element of intSet using a forEach loop.
Inside the loop, we convert each integer element to a string using the toString() method and add it to the stringSet.

Java Program

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

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

Output

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

Summary

In this tutorial, we learned How to Convert a Set of Integers to a Set of Strings in Java language with well detailed examples.

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How to Convert a Set of Integers to a Set of Strings in Java - Step by Step Examples

How to Convert a Set of Integers to a Set of Strings in Java ?

Answer

✐ Examples

1 Convert a Set of Integers to a Set of Strings using Stream API

Java Program

Output

2 Convert a Set of Integers to a Set of Strings using forEach Loop

Java Program

Output

Summary

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