Example Gzip Code in Java2

gistfile1.java

/*
  Unzip a gz file in Java:
  You could probably modify to do a zip.
 */

package io;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;

public class UnzipWriter {

    private final String filename;
    private final FileWriterConf conf;
        
    private final ServerDirConf dirConf;
    
    private int bufferSize = 2048;
        
    public UnzipWriter(final String filename, final FileWriterConf conf, final ServerDirConf dir) {
        this.filename = filename;
        this.conf = conf;
        this.dirConf = dir;
    }
    
    public boolean unzipWrite() { 
        final long tstart = System.currentTimeMillis();
        GZIPInputStream zipfile = null;
        OutputStream out = null;
        boolean success = false;
        try {            
            final File f = new File(this.filename);
            final String outputfilename = new CustomFilenameMangler(this.conf, this.dirConf).parseZippedFilenameMangle(this.filename);
            final File fout = new File(outputfilename);
            if (!f.exists()) {
                return false;
            }
            zipfile = new GZIPInputStream(new FileInputStream(f));
            out = new FileOutputStream(fout);
            byte[] buf = new byte[bufferSize];
            int len;
            while ((len = zipfile.read(buf)) > 0) {
              out.write(buf, 0, len);
            } // End of the While //
            success = true;
        } catch (IOException e1) {
            e1.printStackTrace();
        } finally {
            if (zipfile != null) {
                try {
                    zipfile.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        } // End of the try - catch //
                
        final long tdiff = System.currentTimeMillis() - tstart;
        System.out.println("Unzip file="+this.filename + " procTime=" + tdiff);
        return success;
    }  
    
    public boolean deleteArchiveFile() {
        final File f = new File(this.filename);
        return f.delete();
    }        
    
} // End of the Class //

I hope this is assigned to me.