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shishira kumar padhan
java default constructor
1 Answer(s)      a year and 7 months ago
Posted in : Java Beginners


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; }


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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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