How to disable components

[Jackie Davis]

How can I disable AWT checkboxes and scrollbars? I can't seem to find any relevant API.

for example in pesudo code:

if checkbox1 is true/checked
  then disable scrollbar1 and checkbox2
 
if (chkBox.getState())
  // disable scrollbar1
  // disable checkbox2

[Ulf Dittmer]

The java.awt.Component class -which all AWT elements extend- has the "setEnabled(boolean)" method, which does exactly that.

[Jackie Davis]

thanks for that!

Another question, if I have sent a thread to sleep for 10secs.

Thread.sleep(10000)

How do I break out of the sleep if I un-check a checkbox?

Object source=e.getSource();
if (source==chkBox) {
  // checkbox un-checked
  if (!checkAxes.getState()) {
    // do something i.e System.exit(0);
  }
}

Not sure if I use the .notify() method or where to use it.

[Ulf Dittmer]

You need to hang on to a reference to the thread in question, and then call thread.interrupt(). You should only do this with threads you have created yourself, not with AWT threads that call your paint methods or event handlers. The article referenced in the javadocs for several Thread methods (e.g. Thread.sleep) talks about thread handling in the context of AWT events; that should be helpful reading for what you're doing.