Support NeoGAF

[Vlad]

Ok, so I've got this program to do for a Java class which involves using JDBC stuff to connect to a local database running off Pointbase and allow for different operations on the database through a GUI.

I know exactly how I'm going to go about doing all the operations and stuff, but for the life of me I can't get the program to actually connect to the database. It keeps throwing a ClassNotFoundException at this line:

Class.forName(driver);

Where driver = "com.pointbase.jdbc.jdbcUniversalDriver"

Now, I know that that driver is valid, as I copy/pasted it from the GUI Pointbase thing that comes with J2EE, but for some reason my Java program is being fickle and not connecting correctly.

Any ideas?

 

[TheOMan]

Ok, so I've got this program to do for a Java class which involves using JDBC stuff to connect to a local database running off Pointbase and allow for different operations on the database through a GUI.

I know exactly how I'm going to go about doing all the operations and stuff, but for the life of me I can't get the program to actually connect to the database. It keeps throwing a ClassNotFoundException at this line:

Class.forName(driver);

Where driver = "com.pointbase.jdbc.jdbcUniversalDriver"

Now, I know that that driver is valid, as I copy/pasted it from the GUI Pointbase thing that comes with J2EE, but for some reason my Java program is being fickle and not connecting correctly.

Any ideas?

The only advice I can offer based on your description is to check your classpath and ensure that the jar file that houses the driver class is on it.

 

[Vlad]

The only advice I can offer based on your description is to check your classpath and ensure that the jar file that houses the driver class is on it.

I was thinking that it was something along those lines, but I'm pretty sure I tried that.

One thing I'm a little unclear on is should this classpath be entered in the Control Panel/System/Environment Variables thing, or should it be through the Java Admin Console? The Java Console has like three different spots for classpaths for different situations (although I did try all of them, to no avail).

 

[Hitman]

I'm taking beginner's Java.. cna one of you guys do ym assignment for me?

 

[CaptainABAB]

Vlad - is this your own java app or are you creating something within an app server? I'm not familiar with PointBase - is that what you are using?

Normally, my classpath is in the same command where I run the java program...

Example:
java -cp c:\lib\JDBCdriver.jar;. MyClass

 

[Slo]

Vlad, you can either set the classpath in your system's environement, in a command prompt that you plan to call java from, or in the IDE you are using. What IDE are you working with? Eclipse?

 

[Vlad]

Vlad, you can either set the classpath in your system's environement, in a command prompt that you plan to call java from, or in the IDE you are using. What IDE are you working with? Eclipse?

Heh, just as I come in here to tell everybody that I figured it out, too.

That was exactly the problem. Even though I set the classpath through Control Panel, JBuilder didn't recognize it or something. Once I told JBuilder where to look when running the program, it all started working just fine.

I'm taking beginner's Java.. cna one of you guys do ym assignment for me?

No, but I can offer hints if you're having trouble.. it'll be nice to go back to something simpler than this stuff