How to access a zip file inside a jar-archive using Java NIO 2

Question

i'd like to access a zip file that is located inside of a jar archive. I thought that i should be possible with the capabilities of NIO 2, but it doesn't seem to work for me. Does somebody know how and if it is possible?

I already read that it wasn't possible before NIO 2 without extracting the zip file first and i also read that the TrueZIP library offers this function. But i'd like to solve the problem with the "native" abilities of Java.

Best regards,

David

what do you want to do with the zip? Extract it? Extract a part of the zip? — Puce, Jun 24 '12 at 12:50

score 4 · Accepted Answer · answered Jun 24 '12 at 12:51

4

Try something like:

Path jarPath = Paths.get(...);
try (FileSystem jarFS = FileSystems.newFileSystem(jarPath, null)) {
    Path zipInJarPath = jarFS.getPath("/foo/myZip.zip");
    ...
}

answered Jun 24 '12 at 12:51

Puce

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This is perfect. I can even write into the file (in my case, a WAR file! – dko Jan 13 '22 at 18:52

How to access a zip file inside a jar-archive using Java NIO 2

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