INT to BYTE

[Varun Gupta]

How can we convert a primitive java int to Java byte.
byte and not byte[].

Waiting for replies.

 

[Jan =?ISO-8859-1?Q?Thom=E4?=]

int myInt = 65;

byte myByte = (byte) (myInt & 0xFF);

Greetings,
Jan

Varun Gupta wrote:

How can we convert a primitive java int to Java byte.
byte and not byte[].

Waiting for replies.

 

[rxreyn3]

There is a commons library that makes conversion very easy:

http://jakarta.apache.org/commons/codec/

Ryan

 

[rxreyn3]

Hmm, thought I did the same thing using the codec lib. Of course, my
brain is %90 malted hops and bong resin; so thanks for correcting me.

- Ryan

 

[EJP]

There is a commons library that makes conversion very easy:

http://jakarta.apache.org/commons/codec/

... which does many things but that's one one of them.

A simple cast is all that's required, as already posted, but the '&
0xff' is not required. The cast does that already.

 

[sgoo]

A simple cast is all that's required, as already posted, but the '&

0xff' is not required. The cast does that already.

It *is* required if you want the output be between 0 and 255.

 

[sgoo]

Sorry, I thought it was from byte->int. It's not necessary here.

 

[Chris Uppal]

It *is* required if you want the output be between 0 and 255.

Depends on whether you want to mask an integer value down to a byte value, i.e.
a value between 0 and 255 inclusive; or whether you want to put the resulting
value into a Java byte variable (or array slot) which holds values in the
range -128 to +127 inclusive. In the former case you should mask with 0xFF
(but don't cast, leave the result as an int); in the later case you just cast
(masking will gain exactly nothing).

-- chris