Inner classes

[Sid Shankar]

Hi,

This code is from the SCJP study guide with a slight modification. The following code compiles successfully but there is NO output. I was wondering why the statement "Inside getY()" is not generated. Is it because everything inside the local method getY() is erased once out of the method? Still feels like the statement should be output.... Would appreciate any answers.

public class Outer {
       public void getX() {
                 class InnerClass {
                          public void getY() {
                          System.out.println(" Inside getY() "); 
            }
        }

        InnerClass inner;
        inner = new InnerClass();
        inner.getY();
    }

     public static void main(String[] args) {
     Outer outer = new Outer(); 
    }
}

Thanks in advance.

Sid.

[Enkita mody]

method-local inner class shouldn't be instantiate outside of that method.

[Winston Gutkowski]

Sid Shankar wrote:Would appreciate any answers.

Sid.

I've added code tags to your post, but the indenting is still bad. I'll leave that to you to sort out. Just use the 'Edit' icon.

Please read the UseCodeTags (←click) carefully.

Thanks

Winston

[Tony Docherty]

Try adding a call to getX() so the code actually runs.

[Sid Shankar]

I have instantiated the class within the method of course. It should give me something because I'm running the method. Tony, I will try calling getX() and see what happens.

Winston, thanks for the tip. Needed to know that.

[Enkita mody]

Sid Shankar wrote:I have instantiated the class within the method of course.

Do you think that below codes are in getX() ?, these code should be in getX() not outside of that.

InnerClass inner;
inner = new InnerClass();
inner.getY();

[Campbell Ritchie]

Welcome to the Ranch
Please note Winston’s point about indentation. Study guides are often incorrectly indented to confuse you about where a bit of code is. Sort out the indentation and you can easily see whether that code is in the method or not.

[Enkita mody]

I got confused because of your bad code formatting.If you had read Winston tipline then you didn't find it useful to follow it ?

and the mistake is already tony told you.