I need help writing an integer to an output byte stream in Java

Thread view:

the1bugbear@gmail.com - 04 Mar 2006 22:08 GMT

I have an opcode that I need to write to a file

for instance 47152 = B830.

When I try to write the integer value to a file using an output stream
the it only writes the first byte of the pattern so the file just gets
the 30 and not the B8. I need to be able to send up to 4 bytes at a
time. I am allowed to extract the bytes if that is possible one at a
time. The problem is really that I get either 1,2,3, or 4 bytes at a
time and I can't tell in advance.

Since it is an opcode I have to build it based on the input file. Any
advice would be great thanks crew.

Reply to this Message

Roedy Green - 04 Mar 2006 23:55 GMT

>When I try to write the integer value to a file using an output stream
>the it only writes the first byte of the pattern so the file just gets
>the 30 and not the B8. I need to be able to send up to 4 bytes at a
>time. I am allowed to extract the bytes if that is possible one at a
>time. The problem is really that I get either 1,2,3, or 4 bytes at a
>time and I can't tell in advance.

For precise binary, you probably want a DataOutputStream or
LEDataOutputStream so you can send out big or little endian groups of
4-bytes. Plain OutputStreams go a byte at a time.

see http://mindprod.com/applets/converter.html for sample code.

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

Reply to this Message

I need help writing an integer to an output byte stream in Java

Free Magazines