Dear my friends... I am developing a database application with Star Office, Adabas D, SuSE 8.2, Java and JDBC. This is my first experience in using JDBC and Adabas D. Usually I use PHP and MySQL. So please help me, I need many advices. I copy the adabasd.jar into the same directory where my application code (on Java language located). It is compiled successfully but it is not able to build a connection between my Adabas D and my application over JDBC. The error message is : " #prabu>java -classpath adabasd.jar konek Exception in thread "main" java.lang.NoClassDefFoundError : konek " The name of my code is "konek.java" after compiled it is "konek.class". Here is my code : " import java.sql.*; public class konek { public static void main(String[] args) { System.out.println("Hallo Indonesia"); try { Class.forName("de.sag.jdbc.adabasd.aDriver"); } catch (ClassNotFoundException e){ System.out.println("JDBC driver for Adabas D not found"); }; try { java.sql.Connection con = java.sql.DriverManager.getConnection("jdbc:adabasd://susefujitsu/prabusoft", "control", "duisburg"); } catch (java.sql.SQLException e) { System.out.println("Error " + e.getErrorCode() + " " + e.getMessage()); } } } " I don't know why it can not find the class whereas I've put the class (konek.class) on the command line to execute my compiled program. Please help. Thank you very much in advance. --------------------------------- Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month!