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What has been discussed in your class so far? What techniques have you been shown?

Do you know where the Java SE packages and classes and their methods are defined? You need to have a link to the site where the API doc is:
Java Platform SE 7

Instead of making up method names...

Where is the method defined that you are trying to use? Where did you see doc for how to code it?

EDIT: Sorry, I don't know anything about eimacs.

That says the compiler can not find a definition for a round method with the args of double and int.
Where did you see that method defined? Do you have the correct import statement to tell the...

Can you post the code you executed and its output that shows the problem.