Sorry to bother the forum with this stupid question, but alas I don't find the answer myself. I have a Jtable with a DefaultTableModel. My application saves the data of the jtable by serialisation. Works well, except that the last entry is often not saved. After I have edited a cell, i have to click on another cell, just to "validate" that last entry, so that it can be stored in the "vector of vector" of the model and be saved. How should I fire that validation programmatically? I used focuslisteners and events etc, but I get a lot of extra code for nothing? As I said, I am a newbee and spoiled by Visual Basic, I guess. Thanks for any tip.