JAVA LZMA SDK provides developers with documentation, source code, and sample code necessary to write software that uses LZMA compression. LZMA is the default and general compression method of the 7z format in the 7-Zip compression program. LZMA provides a high compression ratio and very fast decompression. LZMA is an improved version of the famous LZ77 compression algorithm. It was improved by increasing the maximum compression ratio, keeping high decompression speed, and low memory requirements for decompressing.