Which is the best alternative solution?

Question

https://code.sololearn.com/cPWEJt84o54U/?ref=app

Answer 1

You could use an array, where the index of the button + 1 is the amount you increase myFrame.res by.

Something like:

myFrame.res += indexOf(myArray, myButtaction) + 1;

In the actionPerformed method.

Or, some sort of dictionary/struct class so each button has a number that would indicate how much you increase the value by.

Answer 2

For what?

Answer 3

I want to add two numbers. When i push the button 1 and button 2 the
result would be 3 (1+2=3). The variable res (result) is out of public
void actionPerformed (ActionEvent e).

Which is the best way to write this code?