Java - Byte class with Examples

Introduction

The Java Byte class class wraps a value of primitive type byte in an object. An object of type Byte contains a single field whose type is byte.

Class Declaration

Following is the declaration for java.lang.Byte class −

public final class Byte
   extends Number
      implements Comparable<Byte>

Field

Following are the fields for java.lang.Byte class −

• static byte MAX_VALUE − This is constant holding the maximum value a byte can have, 2⁷-1.

• static byte MIN_VALUE − This is constant holding the minimum value a byte can have, -2⁷.

• static int SIZE − This is the number of bits used to represent a byte value in two's complement binary form.

• static Class<Byte> TYPE − This is the Class instance representing the primitive type byte.

Class constructors

Class methods

Methods inherited

This class inherits methods from the following classes −

• java.lang.Object

Example

The following example shows the usage of Byte class to get byte from a string.

package com.tutorialspoint;

public class ByteDemo {

   public static void main(String[] args) {

      // create a String s and assign value to it
      String s = "+120";

      // create a Byte object b
      Byte b;

      // get the value of byte from string
      b = Byte.valueOf(s);

      // print the value
      System.out.println( "Byte value of string " + s + " is " + b );
   }
}

Let us compile and run the above program, this will produce the following result −

Byte value of string +120 is 120