Compiler can't resolve symbol

Hi,

I am working on a exercise from the book Thinking in Java ,and the jdk1.3 compiler can't resolve the varialbe symbols.

I hope this is a simple problem.

Here is the code.

class DataOnly {

public static void main(String[] args) {

DataOnly d = new DataOnly();

int i;

float f;

boolean b;

d.i = 47;

d.f = 1.1f; // the compiler can't resolve any of the symbols i,f,b

d.b = false;

}

}

Here is what the compiler is saying.

DataOnly.java:8: cannot resolve symbol

symbol : variable i

location: class DataOnly

d.i = 47;

^

DataOnly.java:9: cannot resolve symbol

symbol : variable f

location: class DataOnly

d.f = 1.1f;

^

DataOnly.java:10: cannot resolve symbol

symbol : variable b

location: class DataOnly

d.b = false;

^

3 errors

If anyone knows what my problem is please let me know.

Thx

[994 byte] By [cell@techa] at [2007-10-3 2:53:29]