You can specify as many attributes as you want:
Example
public class Main {
  String fname = "John";
  String lname = "Doe";
  int age = 24;
  public static void main(String[] args) {
    Main myObj = new Main();
    System.out.println("Name: " + myObj.fname + " " + myObj.lname);
    System.out.println("Age: " + myObj.age);
  }
}
The next chapter will teach you how to create class methods and how to access them with objects.
 
Practice Excercise Practice now