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accepting only numbers in a text field

 
Greenhorn
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hai all
I want a text field(jformattedtextfield) which accepts only numbers.It should not even display the other characters.That is here i am not interested in focus listener.Is there any method by which on enter(key press) itself the validation can be done so that other nonintegers are not typed(not accepted by the text field).
 
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Check this....
 
vinod kumar
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thank u
it is working now.....
 
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