Java Applet to BufferedImage [duplicate]

问题

I created a JFrame that loads an external applet for a game like so:

//Setup everything for the Stub.. Below adds the stub to the applet and creates it.
DownloadFile(new URL(World + "/" + Archive), "./gamepack.jar");
CAppletStub Stub = new CAppletStub(new URL(World), new URL(World), this.Parameters);
applet = (Applet) new URLClassLoader(new URL[] {new URL(World.toString() + "/" + Archive)}).loadClass("Rs2Applet").newInstance();

applet.setStub(Stub);
applet.init();
applet.start();
applet.setPreferredSize(new Dimension(Width, Height));
Frame.getContentPane().add(applet);

I'm trying to screenshot this applet or get it to draw its surface in a BufferedImage. I tried subclassing "Applet" and casting my URLClassLoader to that class but it can't cast which makes sense.

How can I capture everything the applet is rendering into an Image?

回答1:

This works for any Component, not only Applets:

public static BufferedImage toBufferedImage(Component component) {
    BufferedImage image = new BufferedImage(component.getWidth(), 
        component.getHeight(), BufferedImage.TYPE_INT_RGB);
    Graphics g = image.getGraphics();
    component.paint(g);
    return image;
}