Contructors vs getters-setters

Question

What is the advantage/disadvantage of using constructors over getters/setters?
Are they interchangeable? Is one method preferred to the other?

Answer 1

Values for the constructors are assigned when the class gets instantiated.
But getters and setters are not

Answer 2

Do not get a variable with a constructor.
Constructors are generally used to initialize values upon object creation.

Setters can set values at any time.
Getters can get the variables/values at any time.

You don't use setters and getters instead of constructors, you use constructors for initial values and getters or setters for later use.

Answer 3

A constructor is used when the object is created.
You can initialize you properties in the constructor.

During the life time of a object, getters and setters are used to get information about the object and to set the properties of the object.

You need to use both.