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I have one text box and One Submit Button in JSF please give me a null validation for text

Posted on 2010-04-10
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I have one text box and One Submit Button

 with out entering the value in text box when i click submit button it would show the error message is null using h: message

could  you please give me the pseudo code for one text box for null validation

i dont want link for that
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by:Sathish David Kumar N
ID: 30312133
use ValidatorTag  
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by:Manikandan Thiagarajan
ID: 30396016
could you please give me one sample example
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by:a_b
ID: 30498997
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Sathish David  Kumar N earned 2000 total points
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by:Sathish David Kumar N
ID: 30502530
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