Can someone point me to a small working example using wait()

Question

Or is wait() what I want to use?
I need to have my app go to sleep for some period of time, say ten or fifteen minutes, and hide its window during that time. Then after that ten minutes it opens its window back up.
I've looked all over Google and I can't find any code samples that a newbie could make sense of. Can anyone point me to a sample?
I wrote what I thought, intuitively, was the way to do it, but I am getting some cryptic message on the "wait()" about "java.lang.IllegalMonitorStateException" which I looked up, but the "explanation" makes even less sense than the raw message. :(
  public void runLoop() {
    getPrefs();
    while (true) {
      ... do stuff ...
      try {
        wait(1000*timeOut);
      } catch ( InterruptedException ie )  {
        ... do stuff ...
  }thanks for any guidance.
--gary                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

Answer 1

Can someone PLEASE point me to a working example?
I use Java only very rarely, and only when forced to, and I am not an expert. Frankly, in spite of being expert in a dozen other languages I am COMPLETELY INCOMPETENT in Java. I'm just trying to get this project done and out of my hair so I can safely forget all about Java for the next year or two. I'd give the project to someone else, but every other coder in the shop refuses to go anywhere near Java.
If I can get this one thing working I can call the project done and be out of here.
I have a working ap that just needs to close its own window when a button is clicked, for some (user specified) period of time like 10 or 15 minutes, and then reopen its window after that period of time. It is intuitively obvious that I should be able to use timer methods, or sleep() , or wait(), but I have not been able to get any of those to work, and the error messages are more cryptic than ancient Sumerian cuneiform.
I've Googled for a working example, but haven't found anything that I can figure out. The examples I've found presuppose far more expertise than I posses, and have far too many pieces missing. Can anyone just point me to a complete example of an ap that sleeps for some period of time and then wakes up again?
I would really, really appreciate the help, and once I've finished this project I promise I won't ever bother you again. Really.
--gary