java.util.zip.zipexception : unknown compression method

Question

I am working with a third party API http://jortho.sourceforge.net/ While using the API, I always get an exception

java.util.zip.zipexception : unknown compression method

There are no zip files involved, I tried not using the .jar file of the API, instead using the class files directly, but it still gives me the same error.

What possibly could be the reason? How can I start off with my debugging? There is a class WordIterator which uses java.util.zip.InflaterInputStream but I don't think the problem is with the API.

I am stuck! What can be the possible way out?

Answer 1

I sounds to me as if someone is trying to unzip a corrupted zip-file/stream, or something which isn't a zip-file or stream at all.

Since JOrtho is GPL, your best shot is to get the source code and debug the thing yourself. In Eclipse, you can set an exception breakpoint on ZipException and the debugger will stop immediately before the exception is thrown.