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oh ok, this is making sense to me now. I just didn't recognize the error in the command prompt, I've had this error before in other languages. I applied the changes and the code compiled without...

ok, but I'm confused about the first error, "identifier expected", That line is a constructor, I thought for constructors you put the (private/public) in and don't give identifiers, just give the...

Wow... I changed the "Planets" directory to "planets" in the windows folder, and got a whole different bunch of errors

Yes exactly, that is what has been so confusing to me. Are the package names case sensitive with the directory names?

ok i got these new files. and I moved them from jdk to the parent directory java:

And I think i understand what you're saying about classpath, but when you give it the directory to search, does it...

ok, i've added an import statement to the helper class Planets.java, but I am now back to the file not found problem:confused:

ok, what you're saying makes sense to me, but the exercise tells me explicitly to put the packages as they are. I assume it's trying to teach me to use a certain feature of java or something, Here's...

[Ok, I tried what you posted, and I'm receiving compiler errors due to the fact that the main class(GreetingsUniverse.java) instantiates the classes defined in Planets.java. but cannot find them.
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Ok, tried that and got these results:

I am using javac in Windows command prompt to compile a basic hello world application that uses 2 source files (this is for a java certification exercise, I'm learning java). The source files are...