Java byte keyword

The Java byte keyword is a primitive data type. It is used to declare variables. It can also be used with methods to return byte value. It can hold an 8-bit signed two's complement integer.

Points to remember

The byte range lies between -128 to 127 (inclusive).
Its default value is 0.
It is useful to handle the st
It is also useful for saving memory in large arrays.
It can be used in place of the int data type.

Examples of Java byte keyword

Example 1: Using byte with variable

public class ByteExample1 {

	public static void main(String[] args) {

		byte num1=127;
		
		byte num2=-128;
		
		System.out.println("num1 : "+num1);
		System.out.println("num2 : "+num2);
				
	}		
}

Test it Now

Output:

Example 2: byte lies out of range

public class ByteExample2 {

	public static void main(String[] args) {

		byte num1=128;
		
		byte num2=-129;
		
		System.out.println("num1 : "+num1);
		System.out.println("num2 : "+num2);
				
	}		
}

Output:

Example 3: Using byte with a method

public class ByteExample3 {
	
	byte age=18;
	
	public byte display()
	{
		return age;
	}
	public static void main(String[] args) {
		ByteExample2 b=new ByteExample2();
		
System.out.println("The age must be: "+b.display());

				
	}		
}

Output: