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instead of "turn(3)" for up write setLocation(getX(),getY()-1); and for down write setLocation(getX(),getY()1);

Don't worry about it!!! Finally figured it out!!! Thanks so much for putting up for my stupid easy to answer questions !!!!

@danpost, my sincere apologies - the bad advice came from Gevater_Tod4711, not from you! (I just meant that making the code change that was suggested resulted in this NullPointerException occurring at runtime; most of what Gevater_Tod4711 was actually fine, though I strongly recommend initialising the strings instead of using substring to remove the 'null' part)

Thanks!

JavaFX can do some (limited) 3D stuff, but isn't yet anywhere near the level where you would sensibly create a full 3D game with it - pretty much the only sensible option (at the scenegraph API level anyway) is JMonkey. Though as Davin said, comparatively few games of this type are created in Java - native languages such as C++ / C# are the usual choices (and indeed pretty much every Java 3D library delegates to native code at some point, otherwise it couldn't take advantage of any hardware acceleration.)

Thank You danpost

Worled. THANKS! :D

Yes, you can, if the method is public. You need a reference to the RandomBallPicker that you want to call the method on (unless the method is static). There is a tutorial covering this here.

That's fixed it, thanks!

<Code Omitted>Broken down, this becomes (assuming there is at least one random picker in the world): <Code Omitted>When using the last codeset, you would need to 'import java.util.List;'.

Okay the problem was that I used the default Windows 7 "unzipper" (I think). I downloaded winrar and now it works or well it comes with the error "No gamepad found, are you sure it's plugged in?" since I haven't the controller nearby right now. Sorry for the trouble :( I will come back when I know if I can connect the controller. And not that it seems to be an issue but I get a warning in the Terminal Window: WARNING: Found unknown Windows version: Windows 7 Attempting to use default windows plug-in. Loading: net.java.games.input.DirectAndRawInputEnvironmentPlugin Thanks for the he

Ah, I see what you mean. I think the first problem you have to solve is writing to a file generally. To get the location of the jar file is tricky. In BlueJ (and Greenfoot) we use code something like: Boot.class.getResource("Boot.class").toString() ... to get a kind of URL which has the location of the jar file (you can use any class name, it doesn't have to be Boot, but it must be inside the jar). The result looks something like this: jar:fi

You should have a look at the Greenfoot Tutorials. Or you can start with some easy games like 'crab' or 'breakout'.

You're welcome!

Look in the Greenfoot class API for the method you need.