Best practice for rebuild parts of the UI.

Vaadin 6 / 7 / 8
1

After some data changes my code rebuilds a part of the complex UI. The code works fine.

But what is the best practice for rebuilding the UI?

Should I use the
removeAllComponents()
 methods, or should I re-create all UI elements. For first method the code is a little ugly - if statments for the desicion inital build or rebuild. The code for complete (re)bulding is more simple - but I am not sure what happens with the old, non used UI elements after UI rebuild. Victims of the GC or unused objects in the memory?

Peter

2

Unused components are garbage collected according to normal Java rules; the only thing that might influence your decision is the (slight) performance impact of re-creating the component objects.

As far as best practices goes, for this particular case there really isn’t one; it depends on your navigation pattern.