Java Problem “UnsatisfiedLinkError”

Question

I made a simple java program that sends bytes to the parallel port, which uses a .dll along with two other classes (pPort.java and ioPort.java) to accomplish it, and it work

Answer 1

DLL needs to be in the path or current working directory in order to be loaded.

I'm guessing when you've ran your program without IDE the latter was the case. When you run it from within NetBeans "working" directory is likely netbeans/bin folder, so DLL can't be found. Add its location to path and you should be good to go.