Catch the image of JTree and save it as a file

Question

There is an JTree and it has a few nodes.
And there, I want to capture both the image of JTree and
the images of it's child nodes as they show in screen.
if possible, I want to capture image of all expanded nodes in tree and
save them as jpg file.
I try to capture the Image of JTree from JTree.createImage() method.
and I also tried to capture the images of child nodes
from JTree.getComponents() and capture images all of child nodes as they were.
I,however,get to know the method
Component.createImage() doesn't return the image that shows in screen as it was.
could anybody tell me the answer?

Answer 1

Hi,
don't know if I got you right, but what you want is a "screenshot" of the JTree, right ?
Try to paint the JTree in a BufferedImage and encode this as JPEG or whatever.
BufferedImage theImage = new BufferedImage(
      owner.getWidth(), owner.getHeight(), BufferedImage.TYPE_INT_RGB);
      Graphics g = theImage.createGraphics();
      g.setClip( 0, 0, owner.getWidth(), owner.getHeight());
      owner.paint( g);owner is your JTree or any other component you want.
Hope that helped.