JTable Help To add a column

Question

Hi friends
I hava a problem:-
IN SHORT I WANT TO ADD A COLUMN TO THE JTABLE. Please read to understand the problem...
I made a class called clsViewUsers which implements AbstractTableModel. This class fetches data and this data is put in the JTable with the constructor JTable(javax.swing.table.TableModel dm).
Now I want to add a column to the table without disturbing the TableModel.
I tried JTable.addColumn(javax.swing.table.TableColumn aColumn).
I made TableColumn UserStatusColumn = new TableColumn();
This TableColumn class has a function called setCellRenderer(TableCellRenderer aRenderer). This function takes a TableCellRenderer.
I made a class which implements this TableCellRenderer. This class compiles well but when this returns the java.awt.Component class to setCellRenderer(TableCellRenderer aRenderer)(Function above). Then it gives compile error as setCellRenderer(javax.swing.table.TableCellRenderer) in javax.swing.table.TableColumn cannot be applied to (java.awt.Component).
IN SHORT I WANT TO ADD A COLUMN TO THE JTABLE.
Please help
Vishwajeet Wadhwa

Answer 1

You can use a vector called columNames to store the column names and create a method like
public void addColumn(String columnName) {
columnNames.add(columnName);
you can make your model implement an interface that has a method for adding columns like
public interface ChangeableColumn{
public void addColumn(String columnName);
and have some other object like a panel with a button hold a reference to the TableModel which implements the interface
somePanel.addChangeableColumnListener(ChangeableColumListener tablemodel){
this.columnListener = tablemodel;
and the panel can have a method called addColumn(String columnName){}
that will called the method in the interface which will be implemented in the model
something like that maybe