File comparaison works on win32 JVM, not on 64bit solaris JVM

Question

Hi all!
I have the following code comparing 2 files. It works on win2000 but doesnt work on unix solaris. (same JVM version)
win32 JVM is 32 bit, solaris JVM 64 bit
private boolean fichierIdentiqueBytePourByte( InputStream in1, InputStream in2 ) throws IOException{
          int a = 0, b = 0;
          while(true){
            // read next byte from both stream
            a = in1.read();
            b = in2.read();
            // if its different then files are different and we are done
            if (a!=b) return false;
            // if both are at eof then all checked must be the same
            if (a==-1&&b==-1) return true;
            // if either are at eof then they are different sizes
            if (a==-1||b==-1) return false;
     }any ideas of what the problem might be?
Thanks

Answer 1

Presumably when you say it didn't work you mean that in one case it returned true and in the other it returned false.
If something else then you need to explain what it is.
Naturally one obvious source of the problem is that in fact the files are not the same on the 64 bit machine. For example they were transferred using ftp and one was transferred using ftp text and other via ftp binary. Then the lengths would be different.
Another possibility is that you are not running the code that you think you are.
If the files are very large then it is possible there is some difference there.