Question

I’ve installed MaxDB in my local machine and I’m trying to make a connection to it using Java.

And I’m getting this error when running :

Exception in thread “main”
java.lang.ClassNotFoundException:
com.sap.dbtech.jdbc.DriverSapDB

at java.net.URLClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClassInternal(Unknown Source)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at sap.maxdb.Hello.main(Hello.java:15)

This is the code I’m using :

package sap.maxdb;

import java.sql.*;

public class Hello
{
public static void main(String[] args) throws ClassNotFoundException, SQLException
{
String username = "DBM";
String password = "azerty";
String dbname = "SAPDB";

Class.forName ("com.sap.dbtech.jdbc.DriverSapDB");
String url = "jdbc:sapdb://" + dbname;

Connection connection = DriverManager.getConnection (url, username, password);
Statement stmt = connection.createStatement ();
ResultSet resultSet = stmt.executeQuery ("SELECT * FROM HOTEL.CUSTOMER");
resultSet.next ();
String hello = resultSet.getString (1);
System.out.println (hello);

resultSet.close ();
stmt.close();
connection.close ();
}
}

I did like they said in their website :

set CLASSPATH=%CLASSPATH%;C:\Program
Files\sdb\programs\runtime\jar\sapdbc.jar

But I get always the same error.

I know that I’m missing something but can’t find it °!°

Waiting for your help.

Thanks.

Answer 1

What does “install” mean? Basically, the db server must be installed and running.

Step two is to add the driver (which you can find under C:\Program Files\sdb\programs\runtime\jar\sapdbc.jar, assuming this applies to your installation too) to the build path of your project. If the driver class cannot be found, it’ll raise a ClassNotFoundException as you experienced.

You don’t mention which IDE you are using, but try to set your project buildpath from the context menu.