Java - Integer byteValue() method

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Description

The Java Integer byteValue() method returns the value of this Integer as a byte.

Declaration

Following is the declaration for java.lang.Integer.byteValue() method

public byte byteValue()

Parameters

NA

Return Value

This method returns the numeric value represented by this object after conversion to type byte.

Exception

NA

Example 1

The following example shows the usage of Integer byteValue() method to get a byte from an integer. We've created a Integer variable and assigned it an Integer object created using a positive int value. Then using byteValue() method, we're printing the byte from the Integer object.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      Integer obj = new Integer(10);
 
      // returns the value of Integer as a byte
      byte b = obj.byteValue();
      System.out.println("Value of b = " + b);
   }
} 

Output

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

Value of b = 10

Example 2

The following example shows the usage of Integer byteValue() method to get a byte from an integer. We've created a Integer variable and assigned it an Integer object created using a negative int value. Then using byteValue() method, we're printing the byte from the Integer object.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      Integer obj = new Integer(-10);
 
      // returns the value of Integer as a byte
      byte b = obj.byteValue();
      System.out.println("Value of b = " + b);
   }
} 

Output

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

Value of b = -10

Example 3

The following example shows the usage of Integer byteValue() method to get a byte from an integer. We've created a Integer variable and assigned it an Integer object created using a zero int value. Then using byteValue() method, we're printing the byte from the Integer object.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      Integer obj = new Integer(0);
 
      // returns the value of Integer as a byte
      byte b = obj.byteValue();
      System.out.println("Value of b = " + b);
   }
} 

Output

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

Value of b = 0

Example 4

The following example shows the usage of Integer byteValue() method to get a byte from an integer. We've created a Integer variable and assigned it an Integer object created using a negative zero int value. Then using byteValue() method, we're printing the byte from the Integer object.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      Integer obj = new Integer(-0);
 
      // returns the value of Integer as a byte
      byte b = obj.byteValue();
      System.out.println("Value of b = " + b);
   }
} 

Output

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

Value of b = 0