Re: How to change Swing app to JApplet

From:

bencoe@gmail.com

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 21 Jun 2007 19:09:45 -0000

Message-ID:

<1182452985.396079.124350@q19g2000prn.googlegroups.com>

On Jun 21, 1:36 pm, Tom Hawtin <use...@tackline.plus.com> wrote:

JTL.zheng wrote:

  public class Applet extends JApplet {

   private static final long serialVersionUID = -3683798728718521374L;
   public void init() {
           javax.swing.SwingUtilities.invokeLater(new Runnable() {
                   public void run() {
                           new UI();
                   }
           });
   }
  }

but it doesn't work....
what code should I change?

Technically you should set the GUI up before returning from init:

public class SomeApplet extends JApplet {
    private static final long serialVersionUID = -3683798728718521374L;
    @Override
    public void init() {
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
                      public void run() {
                          new UI();
                      }
            });
        } catch (InterruptedException exc) {
            Thread.currentThread().interrupt();
        } catch (java.lang.reflect.InvocationTargetException exc) {
            Throwable cause = exc.getCause();
            if (cause instanceof RuntimeException) {
                 throw (RuntimeException)cause;
            } else if (cause instanceof Error) {
                 throw (Error)cause;
            } else {
                throw new Error(cause);
            }
        }
    }

}

(Disclaimer: Not tested or even compiled.)

However, I don't know whether that actually makes any difference.

Tom Hawtin

I'm assuming your new UI() method makes an instance of a Swing
container at some point? If this is the case, keep in mind the JApplet
now constitutes the main frame of your Swing application... You should
be able to keep stuff pretty much the same but at some point you'll
want to add your UI as a component to the JApplet.

Ben.