sqlite not updating tables / database busy [locked] using java

I am using java and sqlite for an application.When I try to update a table works fine , but when I am trying to update a second one table directly after the first one , sqlite tells me is busy[locked].I searched for solution but couldn't find.I am closing all Resultsets , PreparedStatements and Connection of the first update before starting the second one but it doesn't work.Any practical solution or any cause of this error?