java.lang.Byte longValue()


The longValue() method of Byte class returns the value of this Byte as a long after a widening primitive conversion.

Important Notes:

  • The method longValue() is specified by longValue() in class Number

Method Syntax

public long longValue()

Method Argument

Data Type Parameter Description

Method Returns

The longValue() method of Byte class returns the numeric value represented by this object after conversion to type long.


Requires Java 1.1 and up

Java Byte longValue() Example

Below is a simple java example on the usage of longValue() method of Byte class.


import java.util.Scanner;

 * This example source code demonstrates the use of 
 * longValue() method of Byte class.

public class ByteLongValueExample {

	public static void main(String[] args) {

		 * Editor's Note
		 * Be extra careful in using this method
		 * as it uses widening concept
		// ask for user input
		System.out.print("Enter a number:");

		// read the user input
		Scanner s = new Scanner(;
		String value = s.nextLine();
		Byte byteValue = new Byte(value);
		// convert byteValue into long
		long result = byteValue.longValue();
		System.out.println("long value is "+result);



Basically on the above example, we have asked the user to enter a number on the console. Internally the input value is assign to a Byte object. We then use the longValue() method to convert it into type long. It doesn’t do much however it shows the basic behaviour of this method.

Sample Output

Below is the sample output when you run the above example.

java Byte longValue() example output