I could not figure out whats wrong with the below code

Question

public class Cat {
String name;
int age;
public static void main(String[] args) {
Cat smudge = new Cat();
System.out.println("Here the program does something for 2 hours...");
smudge.age = 3;
smudge.name = "Smudge";
}
}
Look over this code and try to figure out what's wrong with our program.
Our program had a cat with no name or age for 2 hours!
I did understand the above statement

Answer 1

The original article says something is wrong with the code

Answer 2

Its from codegym

Answer 3

there are many Cat statements, perhaps you are solving this:

"Create valid cats in an unnatural way: using constructors. Let's create a Cat class and declare five different constructors. The simplest constructor contains one parameter: name. The next has name and age. And we'll add weight to the third. Read about the rest in the task conditions."

so learn what constructor of object in java is