CodingForums.com - View Single Post

tomjas · 07-31-2012, 09:26 AM

Hi folks!
I am complete newbie to OOP, and generally quite new to any programming so forgive me my probably silly question. Why use return statement like this:

Code:

class Num
    public int num() {
        i = 10;
        return i;
    }
}

public class Main {
    public static void main (String [] args) {
        Num n = new Num();
        n.num();
        System.out.println(n.i);
    }
}

when we can just

Code:

class Num {
    public void num() {
        i = 10;
   }
}

public class Main {
    public static void main (String [] args) {
        Num n = new Num();
        n.num();
        System.out.println(n.i);
    }
}

In all tutorials for beginners I see the former solution with return statement or the latter with even additional method which job is just return value like this:

Code:

...
public int getN() {
    return i;
}
...

Why?

07-31-2012, 09:26 AM	PM User \| #1
tomjas New to the CF scene Join Date: Jul 2012 Posts: 7 Thanks: 1 Thanked 0 Times in 0 Posts	Why use return statement (newbie) Hi folks! I am complete newbie to OOP, and generally quite new to any programming so forgive me my probably silly question. Why use return statement like this: Code: class Num public int num() { i = 10; return i; } } public class Main { public static void main (String [] args) { Num n = new Num(); n.num(); System.out.println(n.i); } } when we can just Code: class Num { public void num() { i = 10; } } public class Main { public static void main (String [] args) { Num n = new Num(); n.num(); System.out.println(n.i); } } In all tutorials for beginners I see the former solution with return statement or the latter with even additional method which job is just return value like this: Code: ... public int getN() { return i; } ... Why?