Getting int values from a char array

Question

Hi,
I need to make a fast program which reads lots of data from files and process them. I need to interpret these data as int's. To be more efficient and avoid to make a lot of disk access, I allocate in memory buffers part of the data, then process it and then allocate new data. The problem is that if I want to allocate data in memory buffers, all the methods that enables me to do that receceive as a parameter only a an array of chars, and as I have mentioned I need to interpret the data as a 4 bytes int. The static methods of Array to get the int value from a position ar not useful because the onlye get the int value of the indexed byte (or char); this method doesn't take 4 bytes from the index to build an int.
My question is: is there any way to build an int from 4 bytes? or can I get the int's in this way directly from the buffer?
Thank you,

Answer 1

Isn't this one of the prime examples of using java.io.DataOutputStream and java.io.DataInputStream?