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TrueZIP is a Java based Virtual File System (VFS) to enable transparent, multi-threaded read/write access to archive files (ZIP, TAR etc.) as if they were directories. Archive files may be arbitrarily nested and the nesting level is only limited by heap and file system size.

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            A drop-in replacement for the classes in the package
            {@link java.util.zip} which read and write ZIP files.
        
        
            The classes in this package read and write ZIP files according to
            a subset of PKWARE's
            
                ZIP File Format Specification
            ,
            Version 6.3.2 from September 28, 2007.
            The subset has been selected in order to achieve the following
            objectives:
        
        
            
                Full interoperability with ZIP files read or written by the
                package {@link java.util.zip} of Sun's Java SE 6 implementation.
            
            
                Support for arbitrary character sets, in particular
                IBM Code Page 437 (alias IBM PC) for PKZIP compatibility
                and UTF-8 for Java Archive (JAR) compatibility.
                Note that using any other character set except CP437 or UTF-8
                is strongly discouraged because it will result in
                interoperability issues with third party tools, especially
                when interchanging archive files between different locales!
            
            
                Support for reading and writing ZIP64 extensions with the
                following restrictions:
                
                    
                        The maximum file size is {@link java.lang.Long#MAX_VALUE}.
                    
                    
                        The maximum number of entries in the Central Directory
                        is {@link java.lang.Integer#MAX_VALUE}.
                    
                    
                        The offsets in ZIP64 files must respect a preamble if
                        present, i.e. they must by exact.
                        This is in contrast to ZIP32 files where the offsets
                        do not need to respect a preamble if present.
                        Preambles are primarily used to contain self extracting
                        (SFX) executable code.
                    
                
            
            
                {@link de.schlichtherle.util.zip.ZipFile} supports reading
                archive data from the random access read only interface
                {@link de.schlichtherle.io.rof.ReadOnlyFile},
                which allows to read archive data from complex data sources
                such as RAES encrypted ZIP files directly without the need to
                decrypt these to a temporary file first (see package
                {@link de.schlichtherle.crypto.io.raes}).