you are actually getting more than that in your error. It tells you the exact line the error appears on. All that information is helpful.
Further, you are probably getting "could not find symbol class Person". Note the capital "P". In java, the case makes a difference, so "person" is NOT the same thing at all as "Person". These sort of details are important.
Looking at your code, I am not surprised you get this error. What is a "Person"? You are trying to create an array of them on line 11, but nowhere do you tell the java compiler what a person is. At the very least, you need to have a class somewhere that defines what a Person class looks like. You may then need to import it, depending on where the .class file is.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors