Confusion in creating java objects.

Question

sometimes we code for creating object of class like
Car objCar = new Car ():
but sometimes we have to put zero on braces like
Car objCar = new Car (0):
please explain the difference

Answer 1

the first one is using a no argument constructor and the second one is using a constructor with an argument.

it's just like passing an argument to a method. when the object is being created, the object will use the input you gave it (0 in your case) in some way to initialise the state of the object.

Answer 2

It depends from the constructor:
public Car()
{ }
or
public Car(int i)
{ }

Answer 3

🤔