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I have a class which wraps ZipEntrys, but I’m struggling to see how I could then write a method that returns an input stream from any one ZipEntry. I managed to write something that could return an array of input streams for a ZipFile, but I need a way to get an input stream from just one ZipEntry.
Do you not have the ZipFile instance from which the ZipEntry was sourced? If you do you could use ZipFile.getInputStream(ZipEntry).
https://docs.oracle.com/javase/8/docs/api/java/util/zip/ZipFile.html
PS. Just had a quick look at the code and a ZipEntry is not a wrapper for the underlying data in the zip file. It is just a “place holder” for the entry as far as I can see (i.e. zipped file attributes not the data). The actual stream is created through a JNI call in the ZipFile class. Meaning that I do not believe you can do what you are looking to do in a practical way.