this keyword?

[Vishal Hegde]

Hi
well the keyword this is used to point at the current object, right?

can anone ber more precise on this???

[fred rosenberger]

what do you mean by more precise?

It's similar to me writing a paper and using the word 'my' before 'arm'. the sentence 'arms are tattooed' has a different meaning than 'my arms are tattooed'. using the word 'my' indicates WHICH arms are being talked about.

[Vishal Hegde]

Is it by default?

whenever we write a simple hello world program...
(Sir, Huge fan of you and kathys sierra's(including many more cant memorize all the names) SCJP6 Book)

[fred rosenberger]

is what by default what?

and what does it have to do with a hello world program?

[Ernest Friedman-Hill]

Vishal Hegde wrote:
(Sir, Huge fan of you and kathys sierra's(including many more cant memorize all the names) SCJP6 Book)

Yes, fred, when are you coming out with a new one?

[Hunter McMillen]

The this keyword is a built-in feature of the Java language. So it is always there to be used, not sure if this is what you mean by default?

Hunter

[fred rosenberger]

Ernest Friedman-Hill wrote:

Vishal Hegde wrote:
(Sir, Huge fan of you and kathys sierra's(including many more cant memorize all the names) SCJP6 Book)

Yes, fred, when are you coming out with a new one?

No...they meant they are a huge fan of me...and also a huge fan of Kathy's book. Perfectly logical.

[Michael Angstadt]

Vishal Hegde wrote:Is it by default?

If I understand you correctly, it is optional in certain situations. For example, if you have a class-level field called "foo", you can access this field in a method with or without using "this", so it's optional.

public class A{
  private String foo = "foo";
  private void bar(){;
    System.out.println(foo); //prints "foo"
    System.out.println(this.foo); //prints "foo"
  }
}

However, if you also have a variable in your method with the same name, you must use "this" in order to refer to the class-level field.

public class A{
  private String foo = "foo";
  private void bar(){
    String foo = "method foo";
    System.out.println(foo); //prints "method foo"
    System.out.println(this.foo); //prints "foo"
  }
}

You see this sort of thing a lot in setter methods, where the method parameter usually has the same name as the field.

[Vishal Hegde]

fred rosenberger wrote:

Ernest Friedman-Hill wrote:

Vishal Hegde wrote:
(Sir, Huge fan of you and kathys sierra's(including many more cant memorize all the names) SCJP6 Book)

Yes, fred, when are you coming out with a new one?

No...they meant they are a huge fan of me...and also a huge fan of Kathy's book. Perfectly logical.

Lucky to be one of the members of this forums

thnks i think i am getting concepts clear of this method