JNDI problem using netbean

Question

i followed the documents in sun to use JNDI for database connection but i got an expection:
Exception in thread "main" javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
how can i solve it?
thank you very much
i followed http://www.netbeans.org/kb/50/using-netbeans/dbconn.html#pgfId-1156774 and also the procedures from the "help" in netbean:
Accessing a Connection Pool from a Java Class
Applications that are deployed to servers often need to access databases that reside on remote machines. You therefore have to set up a JDBC connection pool the server that points to the database. You then create a data source that connects to the connection pool and use the data source's JNDI name to acquire a connection to the database.
To access a database from an enterprise application:
1. (Optional) Create a service locator class to handle getting the reference to the database.
2. Open the Java file from which you want to access the database. In the Source Editor, right-click the file and choose Enterprise Resources > Use Database.
3. Enter a JNDI name for the database connection. This name must be the same as the JNDI name of the JDBC data source for the database on the target server.
If you are deploying to the Sun Java System Application Server, you can also generate a connection pool and data source for the database connection by selecting the Create Server Resources checkbox. The resources are created under the project's Server Resources node.
4. Select the database to which you want to connect in the Connection drop-down list. If the database is not listed, do the following:
i) If the JDBC driver for the database server is not registered in the IDE, click Add Driver.
ii) Click Add Connection to connect to the database.
5. Under Service Locator Strategy, specify whether to generate inline lookup code or use an existing service locator. You can click the Browse to search for the service locator class name.
6. Click OK.
The Use Database command is only available in EJB module and web application projects.

Answer 1

Exception in thread "main"
javax.naming.NoInitialContextException: Need to
specify class name in environment or system property,
or as an applet parameter, or in an application
resource file: java.naming.factory.initialYou need to pass the environment properties to the InitialContext constructor specifying the java.naming.factory.initial property and also the host name, I think. I read in your post that you are using Sun application server. The preferred method for lookup with Sun's server is Corba. So you need to set the org.omg.CORBA.ORBInitialHost and org.omg.CORBA.ORBInitialPort and have the appserver-rt.jar in the classpath.