Retrieving all table items

[Amy Phillips]

Hi,
I have created an empty JTable and a JTree of objects, when the user clicks one of the tree objects a new line appears on the table with the object details. Once the user has finished selecting objects they click a button. I then need to create vector or Arraylist of objects which are in the table - at the moment I have no idea how I do this any ideas?
Thanks
Amy

[Steve Lovelace]

Here are a few possiblities:
(1) Invoke getValueAt(int row, int col) on your table to fetch the objects one at a time.
(2) Do something like:
DefaultTableModel m = (DefaultTableModel) myTable.getModel();
Vector v = m.getDataVector();
Vector v now contains one vector of objects for each row in your table.
(3) Build your own table model by subclassing AbstractTableModel. Have this table model store the data in a way that is convenient for you. You can then build your table with something like:
TableModel model = new MyTableModel();
JTable table = new JTable(model);

[Amy Phillips]

Thanks for the suggestions Steve. I have been trying to implement the getValueAt and have it return an object which is really a test object (i.e. the item put into the selected cell was a Test object) but it comes out as an object and I am seemingly unable to convert it. This would be a problem if anyone knows how I can pass this object to another class and retrieve the matching Test object from an ArrayList? at the moment I have

    //original verion which works 
    public int fetchThisItem( Test item )
    {
        int idx = tests.indexOf( item );
  return idx;
    }
    
    //new version created to try and retrieve the index of the matching test item - returns -1
    public int fetchThisItem( Object item )
    {
        int idx = tests.indexOf( item );
  return idx;
    }  

Otherwise I have been trying to implement my own table model to return a Test from the getValueAt and this is going a little better but I am having troubles implementing an addRow() and a removeRow() - these were orginally handled by the DefaultTableModel and I can't seem to find anything on how I could implement this functionality through the AbstractTableModel - Any ideas?
Thanks very much
Amy

[Steve Lovelace]

You don't have to implement addRow() and removeRow() and very likely don't want to. The big problem is addRow(), which in DefaultTableModel requires either an Object array or a Vector as an argument. You don't have either one - you have a Test. So write methods to suit you, something like:

public void addTest(Test t) {
    tests.add(t);
}
public void removeTest(int i) {
    tests.remove(i);
}
public void removeTest(Test t) {
    tests.remove(t);
} 

[Amy Phillips]

Brilliant! Thanks Steve I have got it working