JAVA截屏生成图片文件

import java.awt.AWTException;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.swing.filechooser.FileSystemView;

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



public class Snapshot {
	private static Toolkit toolkit;
	private static Robot robot;
	private static BufferedImage bufferedImage = null;
	
	
	public static void shot() throws AWTException, IOException {
		
		toolkit = Toolkit.getDefaultToolkit();
		robot = new Robot();
		Dimension screenDimension = toolkit.getScreenSize();
		
		bufferedImage = robot.createScreenCapture(new Rectangle(screenDimension));
		
		String path = String.valueOf(FileSystemView.getFileSystemView().getHomeDirectory());
		//System.out.println(path);
		
		SimpleDateFormat sdf = new SimpleDateFormat("yyyymmddHHmmss");  
        String name = sdf.format(new Date());  
		name = name+".jpg";
		File file = new File(path +"\\"+ name);
		OutputStream output = new FileOutputStream(file);
		bufferedImage = bufferedImage.getSubimage(0, 0, screenDimension.width,screenDimension.height);

		JPEGEncodeParam param = JPEGCodec.getDefaultJPEGEncodeParam(bufferedImage);
		param.setQuality(0.7F, false);
		JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(output, param);
		encoder.encode(bufferedImage);
		encoder.getOutputStream().close();
		
		Desktop.getDesktop().open(new File(path));
		Runtime.getRuntime().exec("cmd /c " + path + name);

		
	}
	
	
	
	public static void main(String[] args) throws AWTException, IOException {
		shot();
		
	}
}