Why Tables in Two diff Panels not updated synchronously?

Dera Friends:

I have two JPanels PA and PB with same Frame, each Panel contains same table TA and TB separately, PA has TA, PB has TB,

TA listens to TB, so when I insert rows in TB, TA will insert same No of rows in TA in the same position,

I test success in this scenario,

But when I move this pair PA/PB into another more complicated JPanel but still within same JFrmae, strange thing happens,

when I insert 2 rows in TB, TA will insert 4 rows in TA and not in the same position,

when I insert 10 rows in TB, TA will insert 20 rows in TA and not in the same position,

TB always doubles row No of TA,

Why?

Thanks

sunny

[688 byte] By [sunnymanmana] at [2007-11-26 19:33:39]