Solved

how to determine which option in a combo box is selected

Posted on 2007-04-08
6
225 Views
Last Modified: 2010-03-31
How do I determine which option in a combo box is selected?  MY code is below

I want to be able to say if 1 dollar is selected when you press deposit bill, enter 1 dollar, five dollars enter five.


thanks

billComboBox = new JComboBox();
            billComboBox.setToolTipText("Please select your bill to enter then press deposit bill");
            billComboBox.setModel(new DefaultComboBoxModel(new String[] {"1 Dollar", "5 Dollars"}));

            JButton depositBillButton;
            depositBillButton = new JButton();
            depositBillButton.setText("Deposit Bill");
0
Comment
Question by:urobins
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 24

Accepted Solution

by:
sciuriware earned 500 total points
ID: 18872851
billComboBox.getSelectedIndex();

gives the index of the selected item [0..N] or -1 if a new item was typed in.

1 Dollar yields 0
5 Dollars yields 1
7 Dollar will produce -1 because it was obviously typed.

billComboBox.getSelectedItem();

gives the selected item at once without indicating new or old.

;JOOP!
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 18872854
And don't forget:

billComboBox.addActionlistener(this); // Makes life easier.

;JOOP!
0
 

Author Comment

by:urobins
ID: 18873000
Thanks I'll try this out and post back!
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:urobins
ID: 18873199
that worked perfect thanks!

although I didn't have to put the actionlistener and when I tried it gave me an error???

Thanks again
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 18873204
Of course an error when your class does not

"implements ActionListener"

forcing a method to be added:

"public void actionPerformed(ActionEvent e)"

But you seem to do without.

Happy Easter.
0
 

Author Comment

by:urobins
ID: 18873208
oh hahahah.... thanks!  I didn't realize that.

thanks have a happy Easter as well!
0

Featured Post

Salesforce Has Never Been Easier

Improve and reinforce salesforce training & adoption using WalkMe's digital adoption platform. Start saving on costly employee training by creating fast intuitive Walk-Thrus for Salesforce. Claim your Free Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
The viewer will learn how to implement Singleton Design Pattern in Java.
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question