this pointer

Any example like without using 'this' pointer we cant have a solution?

Code:

---

class Foo{
        private int bar;
        public Foo(int bar){
                this.bar = bar;
        }
}

---

bar = bar would have no effect

/edit: Advanced java? :x:

but i can write like

class Foo{

public Foo(int a){
bar = a;
}
}
without using this

This refers to the current object. Look into shadow variables, as well as local and instance variables.

@zyril ,can you please tell me, can I have a problem like without This i cant have a solution?

Quote:

---

Originally Posted by janani@tcs

@zyril ,can you please tell me, can I have a problem like without This i cant have a solution?

---

Are you asking if there could ever be a situation where you need to use the keyword 'this'?

I think so. Which raises the question... why?

Without much thought I'll hazard the guess that you never actually need "this" unless nested classes are involved when it's necessary to disambiguate types rather than methods or variables. (someone will doubtless correct me if I'm wrong).

But the real question is why you would prefer some contrived, verbose, frown inducing, eyebrow raising alternative when "this" would do the job nicely.

Quote:

---

Originally Posted by awinston

Are you asking if there could ever be a situation where you need to use the keyword 'this'?

---

yes..

Quote:

---

Originally Posted by janani@tcs

yes..

---

I think pbrockway2 handled this question nicely. Did you see post #8?

Quote:

---

Originally Posted by eRaaaa

/edit: Advanced java? :x:

---

Certainly not. janani@tcs, please confine beginner questions to the New to Java section.

db

If #8 is not clear, ask.

My point was that if using "this" is clear and straight forward, use it.

(If you google "java nested class this" you will find pages discussing the cases where "this" has to be used. Again, ask if they are unclear.)