Re: Sort a jtable within code
In article <f8e3b99f-0790-4d51-a25d-fef63576a936@googlegroups.com>,
Lew <lewbloch@gmail.com> wrote:
John B. Matthews wrote:
Have you looked at Sorting and Filtering?
<http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#sorting>
Oh, I like that site. Thank you.
You are welcome. Many articles saw updates during the run-up to the
Java 7 roll-out. It's also an appealing example of integrating Java Web
Start.
You can restore your TableModel's intrinsic order as shown here:
<http://stackoverflow.com/a/5484298/230513>
I'd like to know your preference regarding the tutorial example
<http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.orac
le.com/javase/tutorial/uiswing/examples/components/TableSortDemoProject/src/co
mponents/TableSortDemo.java>
(and ain't the "tutorial/displayCode.html" cool, huh?)
Yes, although it took me a while to understand the "Download" link.
Do you prefer
public class TableSortDemo extends JPanel {
public TableSortDemo() {
super(new GridLayout(1,0));
as they do it, or
public class TableSortDemo {
JPanel sorterPanel = new JPanel(new GridLayout(1,0));
etc.?
Ideally, I try to follow Joshua Bloch, Effective Java, 2nd edition:
Item 16: Favor composition over inheritance
Practically, a JPanel is a convenient unit of containment and a handy
rendering surface, so I may honor item 16 more in the breach than the
observance. I can't fault other weaknesses in the tutorial too much;
the particular example cited predates annotations and generics, both
introduced in Java 5.
Item 17: Design and document for inheritance or else prohibit it.
The parent, JComponent, is a good example of the former. JPanel adds
very little: opacity, a default layout and a UI delegate.
Also,
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
'Class<?>' or don't bother?
Citing the same source, Item 23, the unbounded wildcard type Class<?>
"is safe and the raw type isn't." Checking 22 Java 1.5+ examples, I've
(carelessly) used the raw type twice.
--
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>