如何将JPanel上绘制的东西保存成为一个图像（bmp或jpg等等均可）？

Question

问题如上，请各位不吝赐教！

Answer 1

// Try this:
// import com.sun.image.codec.jpeg.*;     Component component = panel;
     BufferedImage bi =(BufferedImage)component.createImage(component.getWidth(),component.getHeight());
     component.paint(bi.getGraphics());      BufferedOutputStream out =new BufferedOutputStream(new FileOutputStream("c:/test1.jpg"));
     JPEGImageEncoder encoder =  JPEGCodec.createJPEGEncoder(out);
     JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
     param.setQuality(1.0f, false);
     encoder.setJPEGEncodeParam(param);
     encoder.encode(bi);
     out.flush();
     out.close();

Answer 2

// or
Component c = panel;
BufferedImage bi =(BufferedImage)c.createImage(c.getWidth(),c.getHeight());
c.paint(bi.getGraphics()); 
javax.imageio.ImageIO.write(bi,"jpg",new File("c:/x1.jpg"));

Answer 3

TO: helpall(was jl)  Thank you for you prcious help!