Question

I have a sequence of Integers in the following format:

Integer1 Integer2 Integer3 Integer4 Integer5 ....

Each four consective integers corresponds to values of a single record. So, I cannot really order them.

What would be the best way to compress such file?

Updates:

1- The values are indpendent of each other. Each 4 consective integers represents a record, for example:

CustomerId PurchaseId Products MoneySpent

Each hold an integer value.

2- Ideally I would like to have it compressed as an object and on disk.

Thanks

Answer 1

The simplest and most compatible approach is to GZIP the file as you write it by wrapping your stream with GZIPOutputStream and reading it wrapped with GZIPInputStream.

InputStream in = new BufferedInputStream(new GZIPInputStream(new FileInputStream(filename)));

OutputStream out = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream(filename)));