How to create zip with lzma compression

Question

I know how to create zip archive:

import java.io.*;
import java.util.zip.*;
public class ZipCreateExample{
    public static void main(String[] args)  throws Exception  
        // input file 
        FileInputStream in = new FileInputStream("F:/sometxt.txt");

        // out put file 
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream("F:/tmp.zip"));

        // name the file inside the zip  file 
        out.putNextEntry(new ZipEntry("zippedjava.txt")); 

        // buffer size
        byte[] b = new byte[1024];
        int count;

        while ((count = in.read(b)) > 0) {
            System.out.println();
            out.write(b, 0, count);
        }
        out.close();
        in.close();
    }
}

But I have no idea how to use lzma compression.

I found this project: https://github.com/jponge/lzma-java which creating compressed file but I don't know how I should combine it with my existing solution.

Answer 1

The latest version of Apache Commons Compress (1.6 released on 23-Oct-2013) supports LZMA compression.

Have a look at http://commons.apache.org/proper/commons-compress/examples.html, specially the one regarding .7z compressing/uncompressing.

Say for example you want to store an html page from an HTTP Response and you want to compress it:

SevenZOutputFile sevenZOutput = new SevenZOutputFile(new File("outFile.7z"));

File entryFile = new File(System.getProperty("java.io.tmpdir") + File.separator + "web.html");
SevenZArchiveEntry entry = sevenZOutput.createArchiveEntry(entryFile, "web.html");

sevenZOutput.putArchiveEntry(entry);
sevenZOutput.write(rawHtml.getBytes());
sevenZOutput.closeArchiveEntry();
sevenZOutput.close();