hi, I tried to install postgresql-7.0.3-2.i386.rpm and its supporting rpms(devel,server,jdbc) and I succeeded. I am able to open the database using 'psql' and create tables. Then, I tried to install the jar file for jdbc 'jdbc7.0-1.1.jar ' and extracted it to the directory /usr/lib/pgsql. Then, I tried to connect database with jdbc with a sample Java program. I gave it like the following way. try { Class.forName("postgresql.Driver"); con=DriverManager.getConnection("jdbc:postgreql://IP/","user1","pass1"); } catch(SQLException e){} catch(ClassNotFoundException e){} ...... ....... After compiling successfully, it comes with the following error: Exception in thread "main" java.lang.NoClassDefFoundError: postgresql/Driver (wrong name: org/postgresql/Driver) at java.lang.ClassLoader.defineClass0(Native method) .......... What could be wrong? thanks in advance. shan ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly