Default constructor

Question

What is default constructor?
How it access? When it comes into picture?
I understood constructor with no arguments is default constructor. Is that ryt..
In same class i defined one explict constructor, and can i call inplicit constructor(default constructor).

Answer 1

If we dont define a constructor then the compiler creates a default constructor, and if we ourselves write a constructor then the compiler will not create a default constructor.
A default constructor provides the default values to the object like 0, null, have a look at this example below

public class Student {
String name;
int age;

public static void main(String[] args) {
Student s = new Student();
System.out.println(s.name+" "+s.age);
}
}
Output: null 0

Answer 2

If you don't provide any constructor in your class, then compiler provides a default constructor with no arguments and it will set its data values with default values.. Its like,
class_name()
{
//set defaults
}

If you provide a constructor, then it will be overridden by your constructors hence no longer available.. So you shloud use your own implemented constructor.. Hope it helps.

Answer 3

~ swim ~
yeah, but it doesnt cleared all my doubts... thats y i came to here
iam not clear about default constructor exact in inheritance!