Declaration question

[ketan khairnar]

Given the following set of member declarations, which of the following is true?


int a; // (1)
static int a; // (2)
int f( ) { return a; } // (3)
static int f( ) { return a; } // (4


Select 2 correct options
a Declarations (1) and (3) cannot occur in the same class definition.


b Declarations (2) and (4) cannot occur in the same class definition.
A static method can refer to a static field.

c Declarations (1) and (4) cannot occur in the same class definition.
because f() is static and a is not.

d Declarations (2) and (3) cannot occur in the same class definition.


e Declarations (1) and (2) cannot occur in the same class definition


One correct option is : c
Other correct option : e

WHAT ABOUT option d?

[Lakshmi Keshav]

The correct option is b.
Since on 2 & 4, there is a duplication of declaration of variable a and method f() respectively.

[Barry Gaunt]

A choice of D is incorrect because a non-static method can access a static member:

public class AccessStatic
{
    static int a; // (2)
    int f() { return a; } // (3)
    int f1() { return this.a; } // equivalent to (3)
    int f2() { return AccessStatic.a; } // equivalent to (3)
}