Solved

Jlist

Posted on 2009-05-11
17
268 Views
Last Modified: 2012-05-06
when user select one item on JList, I can obtain selection by:
String input= jList.getSelectedValue().toString();
However, I want to get the first item on the Jlist if user doesn't
make any selection. Thanks.
0
Comment
Question by:valleytech
  • 9
  • 8
17 Comments
 
LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 24359864
Object item = jList.getModel().getElementAt(0);
String label = item.toString();

0
 

Author Comment

by:valleytech
ID: 24359880
i am late one step Objects
 softwareJList.setSelectedIndex(0);
inputSoftwareText = softwareJList.getSelectedValue().toString();
                              
0
 

Author Comment

by:valleytech
ID: 24359908
how can it can't take the value when i click on scrollpane without clicking on the text inside Jlist?? The Jlist display only one row at a time.
0
 
LVL 92

Expert Comment

by:objects
ID: 24359912
>  softwareJList.setSelectedIndex(0);

you would only do that if you actually wanted to select the first item


0
 
LVL 92

Expert Comment

by:objects
ID: 24359935
the code i posted above does not rely on the seledtion , it just returns the first element

0
 

Author Comment

by:valleytech
ID: 24359949
so please help me on select the item either user click on item or just scroll down. JList can display one row at a time.
0
 
LVL 92

Expert Comment

by:objects
ID: 24359980
jList.ensureIndexIsVisible(0);

0
 

Author Comment

by:valleytech
ID: 24360035
My Jlist has a scrollpane and can display one row at a time.
when user doesn't do anything, it will select first item of the list. Work perfectly.
However, when user roll down scrollpane to  make a selection on JList:
      + if he click on the item. Work perfectly
      + if he is lazy to click on item, DOESN't work.
Please help.
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 92

Expert Comment

by:objects
ID: 24360046
>       + if he is lazy to click on item, DOESN't work.

So you want to select the visible item even if they don't click. Is that correct?
When would it change the selection?

Why not use a JComboBox instead?



0
 

Author Comment

by:valleytech
ID: 24360072
yeSo you want to select the visible item even if they don't click. Is that correct?  <-- that's true.
 I start by jlist so i get stuck with it. hic hic.
0
 
LVL 92

Expert Comment

by:objects
ID: 24360109
cause the user may just have scrolled down to look at other options available and does not want to select the visible item.
What you are trying to do sort of breaks ui guidelines
0
 

Author Comment

by:valleytech
ID: 24360112
I see. So i better change to combobox?
0
 

Author Comment

by:valleytech
ID: 24360121
before i change to combobox, i just wonder whether i can display only 1 item at a time in comboBox?
0
 
LVL 92

Expert Comment

by:objects
ID: 24360141
a combo only display ones at a time, it uses a pull down to change the displayed item
http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html
0
 

Author Comment

by:valleytech
ID: 24360200
and same problem. How to get first item if user is lazy to select item within combo box> thanks a lot.
0
 
LVL 92

Expert Comment

by:objects
ID: 24360222
they cannot be lazy with a combo, only the selected item will be displayed

0
 

Author Comment

by:valleytech
ID: 24360243
cool. let me close this. please help me on GUI question.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
split53 challenge 7 77
best (free) software to access postgres db (java) 1 32
servlet  URL Rewriting 1 25
servlet example issue 6 29
For customizing the look of your lightweight component and making it look lucid like it was made of glass. Or: how to make your component more Apple-ish ;) This tip assumes your component to be of rectangular shape and completely opaque. (COD…
For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…

914 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

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now