JTable column model issues

[JHuman]

Hi all. I've defined a custom TableModel so I can use custom types for my JTable. However, because of this, the table's TableColumnModel is totally out of sync with the model (ie. it isn't populated with any column data at all. No TableColumns or anything). This is annoying, since I need some reference to TableColumn objects (to do some column header rendering stuff).

Are there any good tutorials or examples that show how to ensure column models are in sync with custom table models, so that when you add data/columns to the model, they are also added to the column model?

I hope this post is clear.

[r035198x]

Nah, the post is not clear to me. You extended DefaultTableModel and set an instance of that class to be the TableModel of a JTable, right? What is the problem now?

[JHuman]

Yes.

Basically, in the custom model, the columns are represented by a list of custom types. On overriden methods like getColumnName() and getColumnCount(), I simply interact with this list to return the appropriate value.

However, the column model of the JTable has no knowledge of this list of custom types. Because addColumn() is never called on it, it is not populated with any TableColumns. This poses a problem, since I want to set the renderers for column headers in the table, but the only way to do that is by calling setHeaderRenderer() on TableColumn types, but there aren't any actually being created (since I use a list of custom types).

How do I fix this? Or am I doing it wrong? Should custom column types be added to a custom column model rather than a custom table model?

EDIT: basically, I'm looking for a way to ensure that any data in the custom table model is reflected in the default column model.

[r035198x]

See if Sun's tutorial will help. I'm not sure that I fully graps what you are trying to do. Perhaps you just want to define a custom TableCellRenderer?