foo.java

public void execute() {
  File srcFile = new File(this.srcPath);
  File destFile = new File(this.destPath);
  try (InputStream inputStream = new FileInputStream(srcFile);
  OutputStream outputStream = new FileOutputStream(destFile)){​
    byte[] buffer = new byte[8192];
    int length = 0;
    while ((length = inputStream.read(buffer)) > 0) {
      outputStream.write(buffer, 0, length);
    }
  } catch (IOException ex) {
    Logger.getLogger(NWCp.class.getName()).log(Level.SEVERE, null, ex);
  }
}