What's this all about?

7-Zip-JBinding is a java wrapper for 7-Zip C++ library. It allows extraction of many archive formats using a very fast native library directly from java through JNI. Features:

• Extraction of

  7-Zip	Zip	Rar	Tar	Split	Lzma	Iso	HFS	GZip
  Cpio	BZip2	Z	Arj	Chm	Lhz	Cab	Nsis
  Deb	Rpm	Wim	Udf

• It's cross-platform. Binaries are available for

  › MS-Windows 32/64

  › Linux 32/64

  › Darwin Mac OS X

• Full support for password protected and volumed archives
• 12 example code snippets
• Over 3881 JUnit tests: Dashboard
• Planned: Creation of 7-Zip/Zip archives
• Planned: Extraction of more archive formats: Compound, Dmg, Elf, Hfs, Macho, Mub, Pa, Split, Wim

How does it work?

The 7-Zip-JBinding consists of two parts: the java part and the native part. The java part introduces a cross-platform java interface of the 7-Zip library. The native part of 7-Zip-JBinding communicates with the java part through the java jni interface and uses the corresponding native 7-Zip interface to perform operations.

It's really simple!

Getting number of packed items in an archive:

private int getNumberOfItemsInArchive(String archiveFile) throws Exception {
    ISevenZipInArchive archive;
    RandomAccessFile randomAccessFile;

    randomAccessFile = new RandomAccessFile(archiveFile, "r");

    archive = SevenZip.openInArchive(ArchiveFormat.ZIP, // null - autodetect
            new RandomAccessFileInStream(
                    randomAccessFile));

    int numberOfItems = archive.getNumberOfItems();

    archive.close();
    randomAccessFile.close();

    return numberOfItems;
}

For the sake of simplicity all error handling was skipped. Continue with first steps for more examples and explanations.

News