java.sql。SQLException:没有找到适合jdbc:microsoft:sqlserver的驱动程序

I'm getting this exception when I try to run this program. It's one of the Microsoft examples. I've added the sqljdbc4.jar to the classpath in netbeans for both compile and Run, via the project properties. I also tested that the class could be found by using an import statement below - no error during compile, so it must be finding the jar.I'm getting this exception when I try to run th