Java Program to Convert int to String - The Coding Shala

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 In this post, we will learn how to convert int to string in Java.

Java Program to Convert int to String

There are a few ways by using those we can convert int data type to String data type in Java. The most common ways are below:

  1. By using String.valueOf() method.
  2. By using Integer.toString() method.
  3. By using String.format() method.

Now let's see these methods one by one with examples in Java.

Java Program: 

/**
 * https://www.thecodingshala.com/
 */

public class Main {

    public static void main(String[] args) {
        int num1 = 100;

        // using String.valueOf(int)
        String str1 = String.valueOf(num1);
        System.out.println("Converted String str1 is: " + str1);
        System.out.println("5 + int number is: " + (5 + num1));
        System.out.println("5 + str1 is: " + (5 + str1));

        // using Integer.toString(int)
        String str2 = Integer.toString(num1);
        System.out.println("Converted String str2 is: " + str2);
        System.out.println("10 + str2 is: " + (10 + str2));

        // using String.format()
        String str3 = String.format("%d", num1);
        System.out.println("Converted String str3 is: " + str3);
        System.out.println("1 + str3 is: " + (1 + str3));
    }
}

Output: 

Converted String str1 is: 100
5 + int number is: 105
5 + str1 is: 5100
Converted String str2 is: 100
10 + str2 is: 10100
Converted String str3 is: 100
1 + str3 is: 1100


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