Need some help for a application to computation of series parallel circuits!

[WanYee]

Hi, my name is WanYee, i need some help on an application i am currently doing, the application is like a calculator to find current resistance and etc... of a series-parallel circuit, my problem here is, if i have 2 buttons named "Series" & "Parallel", when the user clicks on "Series" noting happens first, but when i press the button "Calculate" , i want to let my calculate button to use the series formula, how do i let my "Calculate" button knows it. Sorry for my poor explanation.

Note: I am using Swing, NetBeans IDE 6.1! TY, Help is appreciated!

[r035198x]

Hi, my name is WanYee, i need some help on an application i am currently doing, the application is like a calculator to find current resistance and etc... of a series-parallel circuit, my problem here is, if i have 2 buttons named "Series" & "Parallel", when the user clicks on "Series" noting happens first, but when i press the button "Calculate" , i want to let my calculate button to use the series formula, how do i let my "Calculate" button knows it. Sorry for my poor explanation.

Note: I am using Swing, NetBeans IDE 6.1! TY, Help is appreciated!

Read about ActionListeners and the actionPerformed method.

[JosAH]

Hi, my name is WanYee, i need some help on an application i am currently doing, the application is like a calculator to find current resistance and etc... of a series-parallel circuit, my problem here is, if i have 2 buttons named "Series" & "Parallel", when the user clicks on "Series" noting happens first, but when i press the button "Calculate" , i want to let my calculate button to use the series formula, how do i let my "Calculate" button knows it. Sorry for my poor explanation.

Basically your buttons should be JToggleButtons in a ButtonGroup, i.e. one or
the other should be 'selected'. Your Calculate button should have a registerd
ActionListener that checks which of the two first buttons is selected and perform
the appropriate calculation.

kind regards,

Jos

[WanYee]

I know about ActionListener and ActionPerformed , but i do not know how to use the groupButton, i am new to NetBeans, this is actually my school project, and my lecturer asked us to do using NetBeans, which we do not know how to use it, as we use Notepad to learn Java coding, its like so different in NetBeans, so i needed help.

Thank you, help is going to be really appreciated.

[WanYee]

I have attached how my GUI looks like, please comment and help me, thanks.

[WanYee]

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[r035198x]

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Have you tried the advice mentioned by Jos above yet?

[WanYee]

Sorry for the bump, i have not tried ButtonGroup, can you like guide me on it, as i am not sure, as i said, my first time using NetBeans, i can't find a guide which really explains on how to use ButtonGroup.

[JosAH]

Sorry for the bump, i have not tried ButtonGroup, can you like guide me on it, as i am not sure, as i said, my first time using NetBeans, i can't find a guide which really explains on how to use ButtonGroup.

We've collected a couple of useful links; download the API documentation from
this page.

kind regards,

Jos

[WanYee]

Downloading and will read, if i do not understand hope someone will give me an head start of the code or something.

Thanks.

[WanYee]

Jos, Sorry, but i do not still get it on how to use the GroupButton, did you see the attached image i attached, it is the current GUI of my application, i read about the ToggleButton and it says it implements check box and radio button, and in my knowledge, toggle means like the state of 0 when toggled 1 then toggle back to 0 like for binary. Sorry, maybe i am totally all wrong, but i just need a guide on someone to tell me how to do it, to let my calculate button know the state whether is series or parallel last selected.

[WanYee]

Ok, i got the idea how to use the ButtonGroup, but i still would like to know how do i implement the ActionListener code? I have made my Series/Parallel button grouped to the ButtonGroup.

[JosAH]

Ok, i got the idea how to use the ButtonGroup, but i still would like to know how do i implement the ActionListener code? I have made my Series/Parallel button grouped to the ButtonGroup.

.

Good; if you've used the correct buttons you can see that only one of them is
selected; the ButtonGroup takes care of that.

Your ActionListener should be a little class attached to that third button and
passed one of the series/parallel buttons; suppose you give it the series button;
when its actionPerformed () method is called it checks whether or not that
series button is selected and acts accordingly.

kind regards,

Jos

[WanYee]

What do you mean by third button? The "Calculate" button? Could you like guide me on a head start for it. And yeah, i noticed only one of the button will be selected when i run it.

[JosAH]

What do you mean by third button? The "Calculate" button? Could you like guide me on a head start for it.

Yes I mean the 'Calculate' button. Your ActionListener can look like this:

[code=java]
class Calculate implements ActionPerformed {
private AbstractButton ab;
//
public Calculate(JButt on calculate, AbstractButton ab) {
this.ab= ab;
calculate.addAc tionListener(th is);
}
//
public void actionPerformed (ActionEvent ae) {
// calculate something according to the state of ab
}
}[/code]

I think you can manage from here because it's an almost complete giveaway.

kind regards,

Jos