Trouble connecting to Oracle 10g XE via Java

Question

Greetings friends,
As the thread title suggests, I'm trying to connect to the inbuilt HR schema that comes with Oracle 10 XE, via Java. This has implications for my work so any help is appreciated. From my limited knowledge, the drive appears to be the issue...
The code is thus:
package dbconnection;
import java.sql.*;
public class SimpleJDBC {
public static void main(String[] args)
throws SQLException,ClassNotFoundException{
Class.forName("oracle.jdbc.OracleDriver");
System.out.println("Driver loaded!");
Connection connection = DriverManager.getConnection
("jdbc:oracle:thin:@127.0.0.1:1521:xe","HR","HR");
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery
("SELECT EMPLOYEE_ID,FIRST_NAME,LAST_NAME,SALARY"
+ "FROM EMPLOYEES");
while(resultSet.next())
System.out.print(resultSet.getString("EMPLOYEE_ID") +
"\t" + resultSet.getString("FIRST_NAME")+
"\t" + resultSet.getString("LAST_NAME")+
"\t" + resultSet.getString("SALARY"));
connection.close();
The error message output is:
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at dbconnection.SimpleJDBC.main(SimpleJDBC.java:7)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)
My classpath variable is:
C:\ClassPath\ojdbc14_g.jar;.;C:\Program Files\Java\jre6\lib\ext\QTJava.zip
I've tried the ojdbc6.jar, adbc6_g.jar, ojdbc14.jar and adbc14_g.jar drivers with no luck.
Im using 32 bit vista, with Netbeans 6.9.1, and have the latest JDK download(_26). 10g XE is also installed on my machine.
Hopefully I've given you all the info you require. If not, please let me know.
Thanks in advance, and be gentle with me - it's my first time!

Answer 1

gimbal2 wrote:
Your jar is fine, you don't seem to have considered yet that you are attempting to load the wrong class.
Class.forName("oracle.jdbc.OracleDriver");
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.OracleDriverPerhaps you mean oracle.jdbc.driver.OracleDriver, such as the Oracle JDBC faq suggests?
http://www.orafaq.com/wiki/JDBC
Which is wrong. oracle.jdbc.OracleDriver is the driver name, oracle.jdbc.driver.OracleDriver is an old and deprecated name for the driver. More likely the Oracle JDBC driver is not in the classpath of the application.
BTW: If you use recent versions of Oracle JDBC on Java 6 you don't need to explicitly load the driver as per the JDBC 4 specification (see 2nd note on http://download.oracle.com/docs/cd/E14072_01/java.112/e10589/getsta.htm#i1005373 )