How do i use timer with Java.util but without using threads
for (int j = 0; j < button.length; j++)
{
if (button[j] == event.getSource())
{
timer.start () ;
board[j] = num ;
if (checkDouble (i,j) ) {
((JButton)event.getSource()).setText("") ;
board[j] = 0 ;
}
break;
}
}
Oh, I see, you are asking about java.util.Timer.
1. Are you sure you don't want to use a Swing Timer? (Your code seems to deal with Swing).
2. If you really want to use java.util.Timer, then read this:
http://java.sun.com/docs/books/tutorial/essential/threads/timer.html
3. The whole idea of a Timer is to let a background thread run some code at certain points in time, so your question becomes rather pointless. However, when you use the Timer API you are not directly exposed to the underlying multithreading. All you have to do is provide one or more TimerTasks, as explained in the tutorial I linked to.
> I am trying to use a Timer to calculate how long it
> takes for the user to finish a game.... Do you know
> what I should do?
If that's all you want to do, you don't need to use a Timer. You'll need to store the time when the game started, something like this:
long startTime = System.currentTimeMillis();
When the game ends, you check the current time again:
long endTime = System.currentTimeMillis();
Subtracting one from the other will give you the time it took to finish the game in milliseconds. From there you can convert it to minutes, seconds, etc.
However, if you want to have some sort of clock that runs while the game is running, showing the user the elapsed time, then you will need a Timer, preferrably of the javax.swing kind.
> sorry i am like a slow learner so i don't get the
> example in dat tutorial...
If you think you are a slow learner because you didn't understand that tutorial in the 9 minutes that passed from the time I posted the link to your last reply, then you are being too hard on yourself. Learning takes time.
> how do i code a stopwatch program without using
> threads?
You don't, but again, use a javax.swing.Timer. Then you don't have to worry about the threading stuff yourself.
It should be pretty straightforward now that you know how to use a Timer to write a clock. Start the timer when the start-button is clicked. Stop it when the stop-button is clicked. (You could use a JToggleButton for Start/Stop.)
How the hell would you do it without threads without having your actual program do nothing? I can see why you might want to avoid thread.
1) Threads are scary ooohhhh
2) You're a slow learner.
Come on dude, at some point you should learn these things. Now's a perfect time to spend 3-4 hours reading about threads and how they work. They're really not all that complicated.
Because there's been that many seconds since January 1, 1970. If you'd read the documentation for the method you would have known that.
Okay. Besides tutorials that you can read for yourself, there's also documentation that you can read for yourself. Here's a link to it:
http://java.sun.com/j2se/1.5.0/docs/api/index.html
Every single class and method in the entire standard Java API is in there. You should get in the habit of looking in there, I don't know how people can write Java without it.
