Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

JRadioButtons in a JTable

Posted on 2006-07-17
8
Medium Priority
?
719 Views
Last Modified: 2012-06-22
Hi all,

I'm looking at this example on objects website:
http://www.objects.com.au:8088/objects/java/examples/swing/RadioButtonTableCell2.do

But it does not quite work. When you click on a radiobutton the first time, everything is deselected, and then on the second click it selects the JRadioButton. Can somebody please tell me how to sort this, since I'm just not seeing it.

Thanks in advance
0
Comment
Question by:riaancornelius
  • 3
  • 3
  • 2
8 Comments
 
LVL 35

Expert Comment

by:girionis
ID: 17120774
I cannot see the link, I am getting a The requested URL could not be retrieved error. Which table are you referring to, the firts or second from here: http://www.esus.com/javaindex/j2se/jdk1.2/javaxswing/editableatomiccontrols/jtable/jtableradiocell.html ?
0
 
LVL 9

Author Comment

by:riaancornelius
ID: 17120806
the second
0
 
LVL 92

Accepted Solution

by:
objects earned 2000 total points
ID: 17120866
those examples are getting so out of date
i've updated a few but that ones stiull in the works.

what you basically need to do is change the editor to the follwoing

  class RadioButtonEditor extends AbstractCellEditor implements TableCellEditor {
    RadioButtonPanel panel;

    public RadioButtonEditor(RadioButtonPanel panel) {
      this.panel = panel;
      ButtonGroup buttonGroup = new ButtonGroup();
      JRadioButton[] buttons  = panel.getButtons();
      for (int i=0; i<buttons.length; i++) {
        buttonGroup.add(buttons[i]);
      }                  
    }

    public Component getTableCellEditorComponent(JTable table, Object value,
                   boolean isSelected, int row, int column) {
      if (value instanceof Integer) {
        panel.setSelectedIndex(((Integer)value).intValue());
      }      
      return panel;
    }

    public Object getCellEditorValue() {
      return new Integer(panel.getSelectedIndex());
    }
  }

0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 92

Expert Comment

by:objects
ID: 17120873
btw, correct url is

http://www.objects.com.au/java/examples/swing/RadioButtonTableCell2.do

but that may be changing soon, as we have a new site release in the pipeline.
0
 
LVL 35

Expert Comment

by:girionis
ID: 17120926
riaancornelius,
> the second

Ok I see what you mean. Try objects' suggestion, it should work.
0
 
LVL 9

Author Comment

by:riaancornelius
ID: 17121010
Objects, your suggestion works within the current row, but as soon as the row loses focus, both my radiobuttons are selected. Is there maybe a problem in the renderer?
0
 
LVL 92

Assisted Solution

by:objects
objects earned 2000 total points
ID: 17121040
try adding the radio buttons to a button group in the panel ctor
0
 
LVL 9

Author Comment

by:riaancornelius
ID: 17121066
lol, I just tried that. Yes, this sorts it:

class RadioButtonPanel extends JPanel {
    JRadioButton[] buttons;
   
    public RadioButtonPanel(String[] str) {
        setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
        buttons = new JRadioButton[str.length];
        ButtonGroup buttonGroup = new ButtonGroup();
        for (int i=0; i<buttons.length; i++) {
            buttons[i] = new JRadioButton(str[i]);
            buttonGroup.add(buttons[i]);
            buttons[i].setFocusPainted(false);
            add(buttons[i]);
        }
    }
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

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

An old method to applying the Singleton pattern in your Java code is to check if a static instance, defined in the same class that needs to be instantiated once and only once, is null and then create a new instance; otherwise, the pre-existing insta…
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…
This video teaches viewers about errors in exception handling.
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses

926 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