Thread: Calling the actionlistener class depending on variables

Hi there, I'm new to java and new to the forums. I find the best way to learn a programming language is to get coding a project you like and start from there so sorry if this question is a really basic concept (I despise reading books thought I'll look at documentation and tutorials for concepts I'm stuck on ).

So now onto the question and not my life story I'm fairly bad at explaining so I'll do it with code;

    private void styleButtons(JButton... buttons){
        for ( int i=0; i < buttons.length; i++ )
        {
            buttons[i].setBounds(120,10 * (i * 5) + 15, 130, 30);
 
            buttons[i].addActionListener(new ButtonListener1());
        }
    }

I have a button called BtnExit and BtnStart I would like it so during the loop it would assign the class BtnExitButtonListener to BtnExit and BtnStartButtonListener to Btn start and so on (hope you get the idea now).

feel free to correct me over my use of technical words and any advice would be really great even if its "your doing it the wrong way".

How will you distinguish buttonStart and buttonEnd from the other buttons? Is the first button passed in buttonStart and the last one buttonEnd (or some variant of this), or is there some other method you're using?

Originally Posted by helloworld922

How will you distinguish buttonStart and buttonEnd from the other buttons? Is the first button passed in buttonStart and the last one buttonEnd (or some variant of this), or is there some other method you're using?

I define my variables, and then I pass my buttons through the method styleButtons, its rather a lot of buttons so I wanted to make a loop to style all the buttons rather then me repeating the code over and over again.

edit I see what you mean I think
in the parameters style button I call it like this addButtons(ScreenManager.BtnStart, ScreenManager.BtnEnd, ScreenManager.BtnOptions);
and thats how the code distinguishes what button is what during the loop i.e button[i] = BtnStart/BtnEnd/BtnOptions depending on the value in the loop.

The easiest solution is to add your ActionListeners to the JButtons separately, instead of from your style method.

The style method contains functions you want to perform on every JButton. You don't want to add the same ActionListener to every JButton. So don't do it in that function.