OOP 강의 1

class Person{
    String name;
    int age;
}

// 
Person p = new Person();
p.name = "John";
p.age = 30;
// so here as we have not created constutor's we need to write p.name; p.age;

class Human {
    String name;
    int age;
    public Human(String name, int age){
        this.name = name;
        this.age = age;
    }
}

Human h = new Human("John", 30);

// as we have created constuctor's we need not to write h.name; h.age;
// else we add that in the parameter of constructor's/fn
// contructors is a special function that is used to initialize the object

If we donot provide this then we need to always need to write h.name object name;