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Ranch Hand
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I've got my beautiful gui program all done except for one thing. How would I go about changing the text in a JLabel? jLabel.setText("whatever") changes the text I know, but it doesn't actually show the change. What do I do???
 
Greenhorn
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jLabel.repaint();
 
Rick Gentry
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doesn't work

I've got the label a few panels deep, so I don't know if that's affecting it or not. I even tried repainting everything in the whole tree leading down to the labels.
 
Ranch Hand
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Depends on how you put things together. If the new text changes the size of the JLabel you may need to call revalidate on the label.
 
Ranch Hand
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Something that always works for me is:

invalidate()
validate()
repaint()

Sort of covers all of your bases. Hope that helps.

Normally, I would expect the JLabel to repaint itself when you call setText() so its surprising that you are having that problem actually...
 
Rick Gentry
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None of that's working. I'll post my code for someone to look at, but it's lengthy so I'll only do it if it's asked for.
 
Ranch Hand
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>I'll post my code for someone to look at, but it's lengthy so I'll only do it if it's asked for.

post just enough (compilable) code to demonstrate the problem.

just a thought, you don't have a duplicate declaration, something like this -
run it as is, no change, comment out the duplicate declaration and it changes

 
Rick Gentry
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Good idea, but that's no it either. The labels only have one instance of each. I have each of them inside an inner class extending JPanel, and those panels are in the JFrame.
 
Rick Gentry
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Thanks to those who helped, I found the bug. I wasn't resetting the text; I was reinstancing the labels. Dumb mistake.
 
It is sorta covered in the JavaRanch Style Guide.
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