Admission Form in Java Netbeans

// CODING for SUBMIT BUTTON

private void SubmitActionPerformed(java.awt.event.ActionEvent evt) {
        String n=t1.getText();
        String city = (String) list1.getSelectedValue();
        String state = (String) cmb1.getSelectedItem();
        ta1.append("Name:"+n);
        ta1.append("\nCity:"+city);
        ta1.append("\nState:"+state);

}