This is a case of not quite knowing enough to know what I don't know. I'll also be reading the oracle descriptions about imports and .jars, but it's rather dense and most of it doesn't seem applicable, so I thought multitasking would be a good answer; I can put this here and hope human expertise is able to direct me more rapidly than my scrolling through dry webpages in search of wisdom. I will, of course, still be reading up in the meantime; obviously I need to learn this stuff.
I'm using JDeveloper 188.8.131.52.1. This code has gone through three iterations, environments, and programmers; I'm not sure whether that's pertinent, but just in case...
I'm making a small game. One of the parameters one can set in the starting screen is to operate a remote device (through an ADU card) whenever one scores.
It uses the javax.comm package to do so. In project properties in JDeveloper, I have comm.jar set to import, and when I dissect Game.jar, it contains comm.jar.
It runs fine as far as the first screen of the program, in which one selects program variables.
However, if I select the remote device to operate, and click "Start" to advance to the game, it doesn't respond. Not a hard crash, because I can still change variables, and even set the remote device to "off" and it will advance to the game. For further confusion, when I run it from within the JDeveloper environment, it will
run with the remote device selected and the game runs fine and the remote device turns on.
Running java -jar Game.jar from the command line, when I select remote device and hit start, it throws the following error message:
... and about 50 more lines.
I've tried putting copies of comm.jar in the JRE's bin and lib folders where I hoped it would see it, I've checked to make sure it's inside Game.jar, I'm just... baffled. My intuition is that JDeveloper somehow isn't including comm.jar correctly
in Game.jar, but I still don't know enough to be sure.
What else do you need? Where should I look?
And a less urgent additional question:
The program also uses two .dlls to operate. We've been dropping copies of them into Program Files/Java/jre(whatever the latest is)/bin every time we bring the jar to a new computer, which is semi-acceptable, but I was wondering if there's a way to bundle them within the .jar such that it would see them and I wouldn't have to instruct the user where to put the .dlls. For one thing, there's a small level of confusion since the jre doesn't always have the same number or location. For the second, the users sometimes get confused or lie about whether they've put the .dlls in the right place.
Happy Saint Patrick's Day!