An error in K&B certification book

[Jon Lee]

Just wanna report an error in "Sun Certified Programmer & Developer for Java 2 Study Guide (Exam 310-035 & 310-027)" book authored by Kathy Sierra and Bert Bates.

On Chapter 3, page 43. The sample code can not be compiled!!!

class Foo {
  int size = 7;
  
  static void changeIt(int size) {
    size = size + 200;
    System.out.println("size in changeIt is " + size);
  }
  
  public static void main (String [] args) {
    Foo f = new Foo();
    System.out.println("size = " + size);
    changeIt(size);
    System.out.println("size after changeIt is " + size);
  }
}

static method "main" can not access instance member "size"!!

[ October 06, 2005: Message edited by: Jon Lee ]
[ October 06, 2005: Message edited by: Barry Gaunt ]

[A Kumar]

Hi ..,

Yes you are right about the piece of code...

 
 
 
 
 
public static void main (String [] args) {
      int size=7;//Add this line
      
       Foo f = new Foo();
 
      System.out.println("size = " + size);
 
      changeIt(size);
 
      System.out.println("size after changeIt is " + size);
 
    }
 
  }
 
 
 

Make a change in the main and it will run..


[ October 06, 2005: Message edited by: A Kumar ]