Access modifiers

[Chamya Pehalvan]

Which statements are true?
int a .....(1)
static int a;........(2)
int f() {return a;}........(3)
static int f() {return a;}........(4)
(1)& (3) cannot occur in the same class definition
(2)& (4) cannot occur in the same class definition
(1)& (4) cannot occur in the same class definition
(2)& (3) cannot occur in the same class definition

[partha sarathy]

my dear friend the statement on the 3rd one is a true one.
ie a nonstatic variable can not be referenced by a staic metrhod in the same class. The other options are all possible. IF got doubt please try the following example in your comp. It will show your result.
This is a example which proves that 3rd statement is alone right.
/**************************************************************
public class example2 {
int a;
static int f() {
System.out.println(a);
return a;
}
public static void main(String args[]) {
example1 y1 = new example1();
y1.a = 20;
example1.f();
}
}
/*****************************************************************\

[partha sarathy]

my friend even try this the reverse it will workwhich makes your
4th statement is not true. Because we can have that declarations in the same class and also can access it.
here is the code . please try to access it and you acn get cleared
/************************************************************
public class example1 {
static int a;
int f() {
System.out.println(a);
return a;
}
public static void main(String args[]) {
example1 y1 = new example1();
example1.a = 20;
y1.f();
}
}
/****************************************************************
this will work for you. The other two are obvious we need not have to touth it as it is false