Multiple selection in JTable

[chaitanya bh]

i had a problem in selecting mutiple rows. if we select 3 or 10 rows with Ctrl+A and Mouseclick when we select the 4th or 10th row it is deselecting the remaining rows. can any one help me

[Cp Baherwani]

I do not get the question completely. You press Ctrl+A to select all the rows, then how do you need a mouse click to select the 4th row?

If your question is that you selected some rows and need to add the 4th row to the selected rows then:
Hold the Ctrl down when you click on the 4th row to add it to current set of selected rows.