int to byte Java

After knowing primitive data types and Java rules of Data Type Casting (Type Conversion), let us cast int to byte.

The byte takes 1 byte of memory and int takes 4 bytes of memory. Assigning 4 bytes of memory to 1 byte of memory requires explicit casting.

byte –> short –> int –> long –> float –> double

The left-side value can be assigned to any right-side value and is done implicitly. The reverse like int to byte requires explicit casting.

Examples of implicit casting

int x = 10;
long y = x;

byte x = 10;
int y = x;

Following program on int to byte explains explicit casting, observe Java style of explicit casting.
public class Conversions
  public static void main(String args[])
    int i1 = 10;
    // byte b1 = i1;            // compilation error
    byte b1 = (byte) i1;

    System.out.println("int value: " + i1);                // prints 10
    System.out.println("Converted byte value: " + b1);     // prints 10

int to byte
Output screenshot of int to byte Java

byte b1 = i1;

The above statement raises a compilation error "possible loss of precision".

byte b1 = (byte) i1;

The int i1 is explicitly type casted to byte b1. Observe, the syntax of explicit casting. On both sides, it should be byte only.

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