Empty String validation for Multiple JTextfield

Question

Is there a way to validate a number of JTextfields in java without the if else structure. I have a set of 13 fields, i want an error message when no entry is given for any o

Answer 1

There are multiple ways to do this, one is

 JTextField[] txtFieldA = new JTextField[13] ;
 txtFieldFirstName.setName("First Name") ; //add name for all text fields
 txtFieldA[0] = txtFieldFirstName ;
 txtFieldA[1] = txtFieldLastName ;
 ....

 // in action event
 for(JTextField txtField : txtFieldA) {
   if(txtField.getText().equals("") ) {
      JOptionPane.showMessageDialog(null, txtField.getName() +" is empty!");
      //break it to avoid multiple popups
      break;
   }
 }

Also please take a look at JGoodies Validation that framework helps you validate user input in Swing applications and assists you in reporting validation errors and warnings.