This week's giveaway is in the Spring forum.
We're giving away four copies of REST with Spring (video course) and have Eugen Paraschiv on-line!
See this thread for details.
The moose likes Java in General and the fly likes combo box Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of REST with Spring (video course) this week in the Spring forum!
JavaRanch » Java Forums » Java » Java in General
Bookmark "combo box" Watch "combo box" New topic

combo box

Rich Wilson

Joined: Jun 30, 2005
Posts: 17
Can some one tell me what I am doing wrong here? I am trying to enable a listener to select the text from the combo box so I can set the string value from
String [] Irates ={"5.35","5.5","5.75"};
String [] Nyears = {"7","15","30"};

thses strings and assign them to these variables with a loop

double aprnum = Double.parseDouble("0" + apr.getText());
double yearnum = Double.parseDouble("0" + yearsField.getText());

I have read and tried this for the past 10 hours and everytime I get it setup where it will compile and run (I think) the buttons quit working.

Tim McGuire
Ranch Hand

Joined: Apr 30, 2003
Posts: 820

For starters:

1. You need an action listener for the "choices" combo box to see which loan type the user has chosen.

2. years and apr are returning null as you have it written. You don't need to store values in JTextFields such as yearsfield and apr. Get rid of those JTextFields. Then, you don't have to bother converting their text into doubles. you can keep them in memory by giving their value to a variable. This would be done in the action listener for the choices combo box as follows:

I don't see any loop in there that would list the balances, so you will need to add that somehow.
Rich Wilson

Joined: Jun 30, 2005
Posts: 17
thank you it worked like a champ. I was trying that once before but I was not including it in the correct method.
I agree. Here's the link:
subject: combo box
It's not a secret anymore!