Programming Example

byte Datatype in Java

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💻 Practical Program

📘 Step by Step Learning

In this program you will learn about byte datatype in java programming language. Here you will learn how to declare a byte data type in your class.

Program Code

 public class Sample {

   public static void main(String []args) {
      // this is declaration and initialization of variable a
	  // datatype is byte 
	  byte a = 100;  
	  // this is declaration and initialization of variable b
	  // datatype is byte 
      byte b = -50; 
      System.out.println(a); // it will print a variable 
      System.out.println(b); // it will print b variable 
   }
}

Output

100
-50
Press any key to continue . . .

Explanation

Byte data type is an 8-bit signed two's complement integer
Minimum value is -128 (-2^7)
Maximum value is 127 (inclusive)(2^7 -1)
Default value is 0
Byte data type is used to save space in large arrays, mainly in place of integers, since a byte is four times smaller than an integer.
Example: byte a = 100, byte b = -50

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.