java - how to make jtextfield only accept characters in netbeans

Question

I have done a sample project in netbeans of registration. In the jtextfield1 is the user id and Jtextfiled7 is country, Both must in characters not in numeric or not allowed spaces and special characters.how it is possible?

Answer 1

You can use JFormattedTextField or you can code inside the JTextField's KeyTyped event

jTextField.addKeyListener(new java.awt.event.KeyAdapter() {
        public void keyTyped(java.awt.event.KeyEvent evt) {

         if(!(Character.isLetter(evt.getKeyChar()))){
                evt.consume();
            }
        }
    });