How to compare user input in a jTextfield with data in the database? (im using java & php)

[Shammikit]

  on this button click i want to compare user input on the textfield with the data in my database.this is my code but nothing is happening when i run it and i cant find any mistakes in  this. can u please help me figure out whats wrong with it?
   

 

[Mr_KoKa]

You hurt yourself with handling exception in this way. you see, you "handle" exception but you don't log it anywhere, so when exception occurs then nothing happens as it is catch but not logged. add something like this:

Logger.getLogger(YOUR_CLASS_NAME.class.getName()).log(Level.SEVERE, null, ex);   

Or anything that will notice you about exception.