import java.awt.GraphicsEnvironment;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.image.BufferedImage;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import com.sun.image.codec.jpeg.JPEGCodec;

import com.sun.image.codec.jpeg.JPEGEncodeParam;

import com.sun.image.codec.jpeg.JPEGImageEncoder;

public class ScreenCapture {

    public static void main(String[] args) throws FileNotFoundException,

            IOException, AWTException {

        GraphicsEnvironment ge = GraphicsEnvironment

                .getLocalGraphicsEnvironment();

        GraphicsDevice[] gs = ge.getScreenDevices();

        for (int j = 0; j < gs.length; j++) {

            GraphicsDevice gd = gs[j];

            Robot r = new Robot();

            Rectangle rect = gd.getConfigurations()[0].getBounds();

            BufferedImage image = r.createScreenCapture(rect);

            generateJPG(image, “screen” + j + “.jpg”);

        }

    }

    private static void generateJPG(BufferedImage buffer, String fileName)

            throws FileNotFoundException, IOException {

        FileOutputStream file = new FileOutputStream(fileName);

        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(file);

        JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(buffer);

        param.setQuality(0.75F, true);

        encoder.setJPEGEncodeParam(param);

        encoder.encode(buffer);

        file.close();

    }

}