Re: Sort a jtable within code

From:
"John B. Matthews" <nospam@nospam.invalid>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 13 Sep 2012 23:58:05 -0400
Message-ID:
<nospam-DFA37D.23580513092012@news.aioe.org>
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>

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