Trouble with Thread.sleep

[atomant]

I have some code that I am having trouble with. I want it to simply display the text "ONE", pause 3 seconds, then display "TWO". What is happening is it pauses 3 seconds then displays "TWO", without displaying "ONE". I was having this problem in a program I am running so I made this simplified example and it is still happening.

I just tried it and this is only happening when I use init(), but when I use run() it works. Is there a way to get it to work with init()?

import acm.graphics.*;
import acm.program.*;

public class Testing extends GraphicsProgram {
	
	public void init() {
		GLabel label = new GLabel("ONE");
		label.setLocation(100,100);
		add(label);
		try {
			Thread.sleep(3000);
			} catch(InterruptedException e) {
			} 
		label.setLabel("TWO");
	}
}

[DarrylBurke]

I haven't a clue about the GraphicsProgram class that you extend, but if it's anything like Swing then you need to go through this Lesson: Concurrency in Swing (The Java™ Tutorials > Creating a GUI With JFC/Swing)

db

[JosAH]

I haven't a clue about the GraphicsProgram class that you extend, but if it's anything like Swing then you need to go through this Lesson: Concurrency in Swing (The Java™ Tutorials > Creating a GUI With JFC/Swing)

I haven't much of a clue either but I vaguely remember that those Gxxx objects are built on top of Swing objects so setting the text of the label and the sleeping needs to be done in a separate thread.

kind regards,

Jos

[quad64bit]

Yeah, I think Jos is correct - you can try using a timer object to perform the changes!