How to convert Java int to String

In Java, we can convert int into a String in two ways:

• by using String.valueOf() method

• by using Integer.toString() method

There are some alternative methods like String.format() method, string concatenation operator etc that can also be used.

1. By using String.valueOf() method

The valueOf() method is a part of String Class. It is a static method that converts an int value into a String value.

Example 1:

Here the int value passed in the method is converted into a String.

public class Main
{  
	public static void main(String args[])
	{  
		int n = 500;  
		System.out.println("The int value is " +n);
		String s = String.valueOf(n); 
		System.out.println("The string value is " +s);
	}
}

The int value is 500
The string value is 500

2. By using Integer.toString() method

The toString() method is a part of Integer Class. It is a static method that can also be used to convert int value to String.

Example 2:

Here, an int value is passed in the toString() method to get a String value.

public class Main
{  
	public static void main(String args[])
	{  
		int n = 500;  
		System.out.println("The int value is " +n);
		String s = Integer.toString(n); 
		System.out.println("The string value is " +s);
	}
}

The int value is 500
The string value is 500

3. By using String.format() method

The format() method is a part of the String class and is used to format the given arguments in a String.

Example 3:

Here, an int value is passed in the format() method to get a String value.

public class Studytonight
{  
	public static void main(String args[])
	{  
		int n = 500;  
		System.out.println("The int value is " +n);
		String s = String.format("%d",n); 
		System.out.println("The string value is " +s);
	}
}

The int value is 500
The string value is 500

4. By using + operator (concatenation)

We can use + operator to concate any value to a string. The + operator returns a String object after concatenation. See the example below.

Example 4:

Here, an int value is concatenated with an emty string to convert int to a String.

public class Studytonight
{  
	public static void main(String args[])
	{  
		int n = 500;  
		System.out.println("The int value is " +n);
		String s = "" + n;
		System.out.println("The string value is " +s);
	}
}

The int value is 500
The string value is 500