Method action event is already defined in JavaCal in NetBeans IDE?

Question

I was trying to make a calculator with java in NetBeans follow ing this tutorial here is the tutorial https://www.youtube.com/watch?v=_ZW4ktG1DEE&list=PLAL-dvEAuBBTkYoPZ4XRU3FsoB8Nm03hy

also, this is my code

https://pastebin.com/frvmHM0Y

private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                              
        enable(); //call enable
}                                             

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    jTextField1.setText(jTextField1.getText() + "1");
}                                        
    jTextField1.setText(jTextField1.getText() + "1");
private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) {                                          
    jTextField1.setText(jTextField1.getText() + "2");
} 

                             

As I am very new to java and this is my first project so any help will be greatly appreciated.

Thanks extremepro999 aka extremenoob999

Answer 1

Thanks all who answered but i found the answer to the error it was a button which had some names.

thanks