JcomboBox action

[MaxiM]

hello all,

ok i have a problem assigning a actionto a JComboBox

rather than post 200+ lines of code i thought i would show you all a image of my program and show you what i need to accomplish



ok, i want to select a item from the JComboBox list and as a result of that item being selected all the JText fields below it must change with diffrent vlaues !

here is the code i have so far for the action that is to accomplish this

====================================

bikeList.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
JComboBox cb = (JComboBox)e.getSource();
String bikeType = (String)cb.getSelectedIte();

}

});///end

======================================

i relise i may have to write a user defined method to actual make the changes to the text fields and then call on that method in my "actionpreformed" method

togive you a bigger perspective here is a link to my source code


http://www.freewebs.com/lrrpclan/across.txt

thanks for your help

[ArchAngel]

i relise i may have to write a user defined method to actual make the changes to the text fields and then call on that method in my "actionpreformed" method

Exactly. What's the problem.

[MaxiM]

well like i said in the above post

ok, i want to select a item from the JComboBox list and as a result of that item being selected all the JText fields below it must change with diffrent vlaues !

thats the problem, how do i make it change the values in the textboxs when i click on the items in the combobox ???????????????

[ArchAngel]

What's wrong with just calling .setText(...) on each of the text boxes?

[MaxiM]

yeah i just figured out that i could just call the .setText() method !! and that works

however when i click on ANY item in the comboBox it will change then all to the same values

how do i make it so when i click on a diffrent item those values will change aswell

to explain abit more

so far i have about 4 items in my comboBox. all my text filesd start with a defult value. when i click on the firet item the text feilds whill change the value yay! when i click on the second item the values will NOT change.
so.....

how do i make it so......

if (item 1 is clicked) {

change values

} else if (item 2 is clicked){

change values

} ect ect ect.......

please help

[ArchAngel]

In your handler code, check what the current selection of the JComboBox is by calling the getSelectedItem(...) method.

http://java.sun.com/j2se/1.4.2/docs/...etSelectedItem()

[MaxiM]

handler code

what the **** are you talking about man ????????

i have posted my soruce code in my first post so feel free to take a look.

i have already posted my question in my last thred if any one can help me SOLVE it i would be thnkfull just send me in the right drection and ill figure it out or a example would be nice.

[ArchAngel]

Handler Code: The code written which handles a particular event.

Therefore, in this context, I'm talking about the code you've written which responds to changes in the JComboBox i.e. loading the different Bike Stats into the text boxes.

[MaxiM]

hello, is any one there.

im still waitng on some help here...


so far i have about 4 items in my comboBox. all my text filesd start with a defult value. when i click on the first item the text feilds whill change the value yay! when i click on the second item the values will NOT change.
so.....

how do i make it so......

if (item 1 is clicked) {

change values

} else if (item 2 is clicked){

change values

} ect ect ect.......

could some one plese provide me with some help or examples of how to accomplish this as i am really stuck here, please porvide a bit more help that other guy is just giving me the run around and is no help at all !

[ArchAngel]

Joshua...


...insulting the only person that's been trying to help you is not a good idea...

I let this go:

what the **** are you talking about man ????????

...but now I'm getting rather irritated.

I think you're expecting the answer handed to you on a plate. You might have to do some work yourself....

OK...firstly, when I run your program, the following does *not* happen:

when i click on the first item the text feilds whill change the value

...instead absolutely nothing happens when I select a new item in the ComboBox. This is because your handler code (see previous definition) is doing nothing:

bikeList.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    JComboBox cb = (JComboBox)e.getSource();
    String bikeType = (String)cb.getSelectedItem();
  }
});

This code isn't *doing* anything. You know which bike has just been selected, so you now know which data you have to load:

bikeList.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    JComboBox cb = (JComboBox)e.getSource();
    String bikeName = (String)cb.getSelectedItem();
    loadBikeData(bikeName);
  }
});

You need to write the method loadBikeData that will move through each of the text boxes, setting the text appropriate to the bike name which has just been passed to it.

A few more things:

1. It's the convention in Java for classes to begin with a capital letter i.e. 'Across', not 'across'.

2. Names such as 'label1' are not particularly helpful.

3. Your indentation is a bit all over the place. See the way I've posted your code, this is more conventional.

[MaxiM]

thank you

if you posted that in the first place !! that would have been much more helpful rather than giving me information which was no help at all as you did before(just a tip for next time)
but thanks anyway..