Java tutorial
import java.io.FileInputStream; import javax.swing.JOptionPane; import javax.swing.ProgressMonitorInputStream; public class Main { public static void main(String args[]) { ProgressMonitorInputStream monitor; try { monitor = new ProgressMonitorInputStream(null, "Loading ", new FileInputStream("yourFile.dat")); while (monitor.available() > 0) { byte[] data = new byte[38]; monitor.read(data); System.out.write(data); } } catch (Exception e) { JOptionPane.showMessageDialog(null, "Unable to find file: yourFile.dat", "Error", JOptionPane.ERROR_MESSAGE); } } }