Rendering question

[kohinoor2007]

I have rendered a column of my table with a combobox.Some questions surfaced when I worked deep in to it.

I have rendered the cell which would look like a combobox only on editing as follows.

sheetColumn.setCellEditor(new DefaultCellEditor(comboBox));
//sheetColumn is my column name.

Have a function in my class,as below,where Iam passing the combo and want to trap the keypress events on the combo.

public void addKeyListener(final JComboBox test){


Component comp1;
comp1 = test.getEditor().getEditorComponent(); //[1]

My questions are :
[1]What does [1] return :--> a JComboBox

So for example if I have a "KeyPressed" event handler as follows:

public void keyPressed(KeyEvent e){

e.getSource();
e.getComponent();

}}

[2]What does "getSource" & "getComponent" return.Do they return the same JComboBox as [1].

Thanks

 

[Diancecht]

I think you can easily do the test ...

Cheers,
Dian

 

[kohinoor2007]

Yes, I tried it before posting here.
In my Program comp1 was returning ComboBox.

but "e.Getsource" was crashing.Was wondering why?.Thought that as the keypress was also coming from the combobox & it should also return JComboBox?...

Is wondering why they are returning different results...

 

[Diancecht]

What do you mean by "crash"? NullPointerException?

Cheers,
Dian

 

[kohinoor2007]

Yes..