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My MessageBox (AlertDialog) is not working as expected

 
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Netbeans IDE Java Ubuntu
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I don't seem to get why it's not working. It is checking the EditText (TextBoxes) to check and see if the input is empty (empty string literal is defined as ""). When I leave all text boxes empty in the app, and click the button, it is supposed to display this AlertDialog. Instead, the app crashes. Any suggestions on what I am doing wrong? Thanks!

 
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Eclipse IDE Postgres Database VI Editor Chrome Java Ubuntu
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When you say, "The app crashes," what exactly happens?  Error message?  App is unresponsive?  Please TellTheDetails (that's a link).
 
Knute Snortum
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A better way to do this is...
 
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