How can I make a call to a swing component which will be blocking?

Hi,
I have a small GUI, and an underlying application class which interacts with it. At one point in time, the underlying class needs to wait for the user to type a string into a textbox, and press a submit button (both of which are on a GUI that is already visible to the user). I cant seem to figure out how to make the call to the gui, so that i blocks, until that submit button is pressed.
Do I have to spawn a seperate thread which constantly is checking if that button is pressed (i.e. associate a flag with that button).
I pretty much wanna do something similar to JOptionDialog, but with my own gui implementation.
thanks!

No...let me rephrase...
1) I only want 1 dialog...with multiple swing components on there. 2 of which are a textbox, and a jbutton....the jbutton has a listener associated with it....and that obviously grabs the text from the textbox...
2) I have a model class (no swing components, only a reference to my dialog)...I want to make a call to the dialog, which blocks, until the button is pressed...
did this clear things up at all?

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