java default constructor

java default constructor

suppose i hava a class:

public class Student{ private int rollNo; private String name; }

then what would be the default constructor:

1) public Student(){ private int rollNo = 0; private String name = null; }

or

2) public Student(){ private int rollNo; private String name; }

View Answers

March 8, 2013 at 7:04 PM

hi friend,

Constructors in a class are used to create objects from the class blueprint. new keyword is used to create the space in memory and initializes the fields. So, in the default constructor you can initializ your fields with a value or you can simply create a constructor by calling super().

In your case Constructor of your class should be as follows :

public Student()
{
rollNo = 0; 
name = null;
}









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