Compression and Decompression of String using GZIP in java

Question

I would like a simple code to compress and decompress a String in Java. Using GZIP.

ex; String input = "Hello world";

and where the output would be a compressed string.

ex; String output = "%%#";

The requirement is to take the existing string compress it and write it on to a text file as a string. The decompression would be to read the text file and convert the content to string. Is this possible??

The output of Gzip is binary, not a string. How do you propose to encode the binary? — markspace
– markspace, Commented Sep 11, 2014 at 1:25
See if this answer helps: stackoverflow.com/a/19044753/1144203 — ivan.sim
– ivan.sim, Commented Sep 11, 2014 at 1:32

Jon Skeet · Accepted Answer · 2014-09-11 01:25:44Z

2

Yes, it's possible as a sequence of steps:

Convert the string to binary form, e.g. using UTF-8
Compress the binary data
Encode the binary data back as text, e.g. using base64. Do not try to "decode" it using a text encoding like base64; the result of compression is not normal encoded text.

However, unless your text is easily-compressible, the size increase due to using base64 may well mean you get a bigger string out than you put in...

answered Sep 11, 2014 at 1:25

Jon Skeet

1.5m893 gold badges9.3k silver badges9.3k bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Compression and Decompression of String using GZIP in java

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related