Apache Commons Compress Create Archive File

Apache Commons Compress

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.ArchiveOutputStream;
import org.apache.commons.compress.archivers.ArchiveStreamFactory;
import org.apache.commons.io.FileUtils;

public class Main {
  private int pathLength;
  
  public Main(String archiverName, File archiveFile, File file) throws Exception {
    super();
    if (file.isDirectory()) {     
      pathLength = file.getPath().length(); 
      pathLength++;
    } else {
      pathLength = file.getParentFile().getPath().length(); 
    }
    
    ArchiveStreamFactory asf = new ArchiveStreamFactory();
    FileOutputStream fos = new FileOutputStream(archiveFile);
    
    ArchiveOutputStream aos = asf.createArchiveOutputStream(archiverName, fos);
    try {
      addFile(file, aos);
    } finally {
      aos.close();
      fos.close();
    }   
  }

  private void addFile(File f, ArchiveOutputStream aos)
      throws IOException {
    if (f.isDirectory()) {
      File[] files = f.listFiles();
      for (File f2 : files) {
        addFile(f2, aos);
      }
    } else {
      String path = f.getPath();
      if (path.length() > pathLength) {
        path = path.substring(pathLength);
      }
      ArchiveEntry entry = aos.createArchiveEntry(f, path);
      aos.putArchiveEntry(entry);
      aos.write(FileUtils.readFileToByteArray(f));
      aos.closeArchiveEntry();
    }
  }

  public static void main(String[] args) throws Exception {
    String archiveFile = args[0]; // Create Archive File
    String file = args[1]; // Add to Archive File
    String ext = archiveFile.substring(archiveFile.lastIndexOf('.') + 1);
    new Main(ext, new File(archiveFile), new File(file));
  }

}