Sort a jtable within code

[clusardi2k]

How can I automatically sort a Jtable by a specific column within code, and still allow the user to (later) sort any column by clicking on the specific table header.

Thanks,

 

[Arne Vajhøj]

How can I automatically sort a Jtable by a specific column within
code, and still allow the user to (later) sort any column by clicking
on the specific table header.

It does not work changing the data in the data model behind the
JTable?

Arne

 

[John B. Matthews]

How can I automatically sort a JTable by a specific column within
code, and still allow the user to (later) sort any column by clicking
on the specific table header.

Have you looked at Sorting and Filtering?

<http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#sorting>

You can restore your TableModel's intrinsic order as shown here:

<http://stackoverflow.com/a/5484298/230513>

 

[Lew]

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 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/tutor...DemoProject/src/components/TableSortDemo.java>

(and ain't the "tutorial/displayCode.html" cool, huh?)

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.?

Also,

public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}

'Class<?>' or don't bother?

 

[clusardi2k]

I've solved this problem. Do you want the details.

 

[clusardi2k]

I've solved this problem. Do you want the details.

http://www.java.net/node/698343

RowSorter sorter = getRowSorter();
List sortKeys = new ArrayList();
sortKeys.add(new RowSorter.SortKey(0, SortOrder.ASCENDING));
sorter.setSortKeys(sortKeys);

Thanks,

 

[John B. Matthews]

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.

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.