When an application and/or process has completed operations with the database, it must release resources by closing the open files and disconnecting from the database engine.
Below is the code for Done():
//
// Done()
//
// This function handles the housekeeping of closing, freeing,
// disconnecting and logging out of the database
//
private static void Done ()
{
System.out.println("DONE");
try
{
stmt.close();
// logout
System.out.println("\tLogout...");
conn.close();
}
catch (SQLException e)
{
Handle_Exception(e);
}
}