Capturing Screen using java

Question

Hi,
Is there anyway I can do a printscreen using java and then send the image over the network?
axlrose82

Answer 1

hi,
I'm using java.awt.robot to do a print screen and trying to save the image or sending it over the network.
I tried to use applets but I got a "XTEST extension not installed on this X server: Error 0". Have you any idea how I can get around this?
Thanks for the help.
Sri.
My code for the applet is as follows:
import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.Robot;
import com.sun.image.codec.jpeg.*;
import java.awt.*;
import java.awt.Image.*;
import java.awt.image.BufferedImage;
import javax.imageio.*;
import javax.imageio.stream.FileImageOutputStream;
import java.util.*;
public class CaptureScreen extends JFrame{
JButton button1 = new JButton("ScreenCapture");
JButton button2 = new JButton("Quit");
Image img = null;
JFrame jframe = null;
JLabel jl = null;
ActionListener al = new ActionListener(){
     public void actionPerformed(ActionEvent e){
          String id = ((JButton)e.getSource()).getText();
          if(id.equals("ScreenCapture")){
          System.out.println("Screen capture button pressed");
          getImage();
          else if(id.equals("Quit")){
          jframe.dispose();
          System.exit(0);
public void getImage(){
     System.out.println("Getting Image");
     try {
     Robot robot = new Robot();
     // Capture the whole screen
     area = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
     BufferedImage bufferedImage = robot.createScreenCapture(area);
     Image image = toImage(bufferedImage);
     jl.setText("get image");
     try
          { // this try set turns the image into a jpg that is saved to the hard drive in the program dir.
          FileOutputStream output = new FileOutputStream("Screen.jpg");
          JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(output);
          encoder.encode(bufferedImage);
          output.flush();
          output.close();
     catch(IOException e)
     catch (AWTException awte) {
     awte.getMessage();
     //repaint();
// This method returns an Image object from a buffered image
public static Image toImage(BufferedImage bufferedImage) {
return Toolkit.getDefaultToolkit().createImage(bufferedImage.getSource());
public void paint(Graphics g){
public void Startproc(){
     Container cp = getContentPane();
     jframe = new JFrame();
     jframe.setSize(500,500);
     jframe.setLocation(10,100);
     JPanel jp1 = new JPanel();
     JPanel jp2 = new JPanel();
     jl = new JLabel("Hello");
     cp.setLayout(new FlowLayout());
     button1.addActionListener(al);
     button2.addActionListener(al);
     jp1.add(button1);
     jp1.add(button2);
     jp2.add(jl);
     cp.add(jp1);
     cp.add(jp2);
public static void main(String[] args){
     CaptureScreen capturescr = new CaptureScreen();
     capturescr.Startproc();
     capturescr.setSize(500,500);
     capturescr.setVisible(true);