Hello !!! have any one try to sped optimization with replacing private variables int with byte ?
any code examples how to convert int to byte

ural01 

Hello !!! have any one try to sped optimization with replacing private variables int with byte ? any code examples how to convert int to byte

False optimization usually. Modern 64-bit CPUs use a native 8-byte word w/ hardware support for 4-byte words. It's actually slower to use a 8-bit char/byte than a 32 or 64-bit int with one exception: storage or payload size. You're probably not dealing those latter issues here so stick to simple ints.

ural01 

Hello !!! have any one try to sped optimization with replacing private variables int with byte ? any code examples how to convert int to byte

 

Code

int x=5; byte b = (byte) x; byte c = (byte) 300; // error, a byte must be between 0 and 255

But like @i960 said, it's probably not going to help you much because of 32 or 64-bit word sizes in today's CPUs. It can help with file and database storage optimization though.