method toFront(), can it cause deadlock, freezing
Hi,
Can the use of the method toFront, contained in Frames, JFrames, Windows, JWindows, etc, etc, cause a program to freeze, i.e. - could you please look at my code below and tell me if what i've done is a no-no.
[code]
// the method Screen is the constructor for Class screen which extends a awt Frame,
public Screen(Basil b) {
this.setBackground(new Color(0,0,0));
this.setUndecorated(true);
/// it's this line here, because it's before set visible would it cause a program to freeze, deadlock?
this.toFront();
basil = b;
this.setVisible(true);
}
Any help welcome,
Andy.
If you do that from a thread that is not the event dispatcher anything can and will happen.
From your code it is impossible to see if this is in the EDT or some other thread, I would guess that it is in some other thread. Adding something like:
SwingUtilities.invokeLater (new Runnable () {
public void run () {toFront ();}
})
may do the trick
>It sounds a little like http://developer.java.sun.com/developer/bugParade/bugs/4838939.html
>
>See if the environment matches yours and try the suggested workaround "java ->Dsun.java2d.noddraw=true ..."
Legosa, ur a legend.
You where spot on, i put that extra line when starting the app and now it never freezes. I would of posted earlier to give you much deserved praise but i had to test,test,test to be sure it was working.
Cheers man,
Helious.
P.s. as far as i know you don't need to place things into the main event dispatch thread untill the component is set visible. But for this app it doesn't really matter as I ain't using threads :) Thanks for the suggestion anyhow.
