Copy and past files from one place to another

Question

HI i am trying to back up few files from java program plz some one help me out. i am new to programming field.
can i have a sample code so i can do my work easyli
thanx yokivo.

Answer 1

run this code and see:
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;
public class CopyPasteFiles extends JFileChooser {
boolean directoryOnly = false;
public CopyPasteFiles(String who) {
if (who == "directoryOnly")
directoryOnly = true;
else
directoryOnly = false;
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
private void jbInit() throws Exception {
this.setBounds(new Rectangle(8, 8, 583, 482));
this.setDialogTitle("Select a file");
if (directoryOnly == false) {
this.setFileSelectionMode(JFileChooser.FILES_ONLY);
this.setApproveButtonText("Backup it!");
else {
this.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
this.setApproveButtonText("Select it!");
public boolean implementBackup(File origin, File destination) {
boolean backup = false;
if (origin != null && destination != null) {
String path = origin.getPath();
try {
FileInputStream origin1 = new FileInputStream(origin);
File back1 = new File(destination.getPath() + File.separator + path.substring(path.lastIndexOf(File.separator)+1));
back1.createNewFile();
FileOutputStream back2 = new FileOutputStream(back1);
byte[] bytes = new byte[origin1.available()];
origin1.read(bytes);
back2.write(bytes);
origin1.close();
back2.close();
back1 = null;
catch (Exception err) {
System.out.println("File Error: " + err.getMessage());
backup = true;
return backup;
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception err) {
System.out.println("General Error: " + err.getMessage());
err.printStackTrace();
CopyPasteFiles copyPasteFiles1 = new CopyPasteFiles("fileOnly");
int returnValue1 = copyPasteFiles1.showOpenDialog(copyPasteFiles1);
File directorySelected = null;
File fileSelected = null;
if (returnValue1 == JFileChooser.APPROVE_OPTION) {
fileSelected = copyPasteFiles1.getSelectedFile();
boolean isDirectory = false;
while (isDirectory == false) {
CopyPasteFiles copyPasteFiles2 = new CopyPasteFiles("directoryOnly");
int returnValue2 = copyPasteFiles2.showOpenDialog(copyPasteFiles2);
if (returnValue2 == JFileChooser.APPROVE_OPTION) {
directorySelected = copyPasteFiles2.getSelectedFile();
if (directorySelected.isDirectory())
isDirectory = true;
else
isDirectory = true;
boolean isBackup = copyPasteFiles1.implementBackup(fileSelected, directorySelected);
int messagebox = 0;
if (isBackup == true)
messagebox = JOptionPane.showConfirmDialog(null, "Backup: YES.", "Caution!", JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE);
else
messagebox = JOptionPane.showConfirmDialog(null, "Backup: NO.", "Caution!", JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE);
System.exit(0);