zlib
· zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents
-- lossless data-compression library for use on virtually any computer hardware and operating system.
The zlib data format is itself portable across platforms. Unlike the LZW compression method used in Unix
compress(1) and in the GIF image format, the compression method currently used in zlib essentially never
expands the data. (LZW can double or triple the file size in extreme cases.) zlib's memory footprint is
also independent of the input data and can be reduced, if necessary, at some cost in compression.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window libz-4.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
