Question

To initialize my image, I have:

imageWater = Toolkit.getDefaultToolkit().getImage("water5.gif");

In my paintComponent() method, I have something like this:

g.drawImage(imageWater, 50, 50, 50, 50, this); 

However, if I change the reference of imageWater to a different file than water5.gif, say, water6.gif, nothing else in the paintComponent() method works, even those that are completely unrelated to imageWater. I have tried changing both variables and references, and nothing works until I replace that exact file in that exact place. I do not understand why this is occurring.

My theory is that the thread.sleep I’ve been using does not perform well with paintComponent (or any gui in general) and I have merely been getting lucky for whatever reason before. I hesitate to test this because I have many thread.sleep() throughout the document and have no idea how to substitute them.

Answer 1

“My theory is that the thread.sleep I’ve been using does not perform well with paintComponent (or any gui in general” would be correct.

The fact hat you’ve not provided us with a working example to look at makes it difficult to understand what it is your are doing or what it is your trying to achieve.

Yu might like it have a look at

• Concurrency in Swing
• How to use Swing Timers

For more information on the topic and possible solutions