Win a copy of Re-engineering Legacy Software this week in the Refactoring forum
or Docker in Action in the Cloud/Virtualization forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

repaint() won't call paint() and I'm out of ideas why

 
Jeff Finn
Greenhorn
Posts: 13
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I've been banging my head on this for a while now. In run() everything is peachy if I use show(). I'm pretty sure I need to use repaint() if I want to move the figure around the board without tracers. also, the thread doesn't quit when I close the app, but that's not my big problem now.

heres the code (all of it) edited, compiled and run in BlueJ

 
Ernest Friedman-Hill
author and iconoclast
Marshal
Pie
Posts: 24208
35
Chrome Eclipse IDE Mac OS X
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi,

Welcome to JavaRanch!

First, I note that in your haste to come in and ask a question, you seem to have missed reading our policy on display names, which quite clearly states that you must use a real (sounding) first and last name for your display name -- no joke names, "handles," or last initials are acceptable. You can fix your display name here. We take this policy rather seriously. Thanks for your cooperation!

Second, your problem: this ought to work, more or less, if you get the JFrame to appear on the screen by calling setVisible(true) in your constructor.

As far as the threads not stopping: graphics programs simply won't quit unless you, one way or another, arrange to have System.exit() be called; usually just by calling setDefaultCloseOperation() on your JFrame.

I should point out that you're mixing AWT and Swing techniques here. With Swing, you don't override paint(), but rather paintComponent(); you always call super.paintComponent(); and you don't need to override update(). Typically you'd write a subclass of a JPanel, not a JFrame, and add that JPanel to an "off-the-shelf" JFrame.

Finally, we've got a Swing/AWT forum here where this post would fit right in. I'm going to move it there. See you around the Ranch!
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic