Best way to do the following?

[Krooger]

I have an array of type byte[4] that is length four.
These bytes all combined together represent a single number
I need to add a variable number to this representation.
What is the easiest way to do this?

So for example lets assume the four bytes represent the number 32453245, I need to add lets say 53445 to the number representing in the array.

Thank You

[pbrockway2]

What is the easiest way to do this?

So for example lets assume the four bytes represent the number 32453245, I need to add lets say 53445 to the number representing in the array.

32453245+53445?

But surely you mean something else?

[Krooger]

What I am trying exactly to do is take a WAV file and edit it.
When I do this I need to change the 5-8 bytes in this file because these four bytes represent the whole file size. When I edit the WAV file the size will always grow, so what I need to do is take what ever number is represented by these four bits add integer X to this number and then store it back in these four bits.

[pbrockway2]

OK. Let me make a wild guess...

You say

These bytes all combined together represent a single number

But do you know how the bytes represent a number? If not you will have to google about, find and read the specifications for a .wav file.

[Krooger]

Yes i know how they combine to make a number, I do not however know how in java to make them do so. an array of 4 bytes is usless to me, i need ot know the int value.

[pbrockway2]

Yes i know how they combine to make a number, I do not however know how in java to make them do so.

Good. Perhaps if you describe the process someone will be able to say how it might be written as Java code. (And the reverse, because you will need that after you have figured out the new file length.)