Person person = new Person();

But the point is that it shouldn't scare you, because in the next lessons it will be explained in detail and everything will be understood, even if it looks a bit difficult now, like the chineese writing...

Also, in addition to what Marius said, Person() or Cat() (notice the parantheses) are some special methods named constructors. These are called when creating the object to initialize the object's members and are defined inside the class itself by the programmer or in its absence, by default by the compiler.

Using Person person = new Person(); you create a new object called person(this is the object name) from the class Person. The same applies for Cat class. Cat cat1 = new Cat(); you create a new object called cat1(this is the object name) from the class Cat. So this is the way you create a new object(or other known as an instance of the class) for each of the classes.