Reading gzip files inside gzip file using Java -

using java have read text files inside gz file in .tar.gz

gz_ltm_logs.tar.gz filename. has files ltm.1.gz, ltm.2.gz inside , these files have text files in them.

i wanted using java.util.zip.* if impossible can @ other libraries. thought able using java.util.zip. doesn't seem straightforward

here's code give idea. method try extract given tar.gz file outputfolder.

public static void extract(file input, file outputfolder) throws ioexception {     byte[] buffer = new byte[1024];      gzipinputstream gzipfile = new gzipinputstream(new fileinputstream(input));     byteoutputstream tarstream = new byteoutputstream();      int gziplengthread;     while ((gziplengthread = gzipfile.read(buffer)) > 0){         tarstream.write(buffer, 0, gziplengthread);     }      gzipfile.close();      org.apache.tools.tar.tarinputstream tarfile = null;      // files inside tar     outputstream out = null;     try {         tarfile = new org.apache.tools.tar.tarinputstream(tarstream.newinputstream());         tarstream.close();          tarentry entry = null;          while ((entry = tarfile.getnextentry()) != null) {              string outfilename = entry.getname();              if (entry.isdirectory()) {                 file directory = new file(outputfolder, outfilename);                 directory.mkdirs();             } else {                 file outputfile = new file(outputfolder, outfilename);                 file outputdirectory = outputfile.getparentfile();                 if (!outputdirectory.exists()) {                     outputdirectory.mkdirs();                 }                 out = new fileoutputstream(outputfile);                  // transfer bytes tarfile output file                 int innerlen;                  while ((innerlen = tarfile.read(buffer)) > 0) {                     out.write(buffer, 0, innerlen);                 }                 out.close();             }         }     } {         if (tarfile != null) {             tarfile.close();         }         if (out != null) {             out.close();         }     } }