Is constructors used for only Initialization? consider this code

Question

Instead of using constructors i can write my code as

public class Vehicle {
private String color="Red";
}

what is the difference between this code and the one using constructors?

Answer 1

The difference is that when you create objects of that class this value will be set to red for all of them. if you use constructors you can pass a variable as parameter and change it upon object creation.

public class Vehicle {
private string color;
public Vehicle (string col)
{
color = col;
}
}

Vehicle car = new Vehicle ("red");
Vehicle bus = new Vehicle ("blue");

And so on... You get the point

Answer 2

yeah, now i understood it is useful to set different variables.Thank you