Error: Could not find or load main class. What is the problem?

Question

Java

There is a folder along the path D:\Tests\com\person In the person folder there are files: Person.java and TestPerson.java (there is a main method in it) At the beginning of each class it is written: package com.person;
On the command line, I go to the Tests folder and compile. Everything is fine. Subfolders are created in the out folder. The Person.class and TestPerson.class files appear along the D:\Tests\out\com\person path. When I try to start the program, it gives an error
Environment variables are set
I tried to prescribe file paths at startup in different ways. Completely, through a dot ... The result is one - an error.
Where to look: writing the path on the command line or setting environment variables?

Answer 1

java -cp out com.person.TestPerson