[3600] in java-interest
Re: What's the deal with the variable *this*?
daemon@ATHENA.MIT.EDU (Pat Niemeyer)
Fri Nov 17 05:20:27 1995
Date: Fri, 17 Nov 1995 02:35:03 -0600 (CST)
From: Pat Niemeyer <pat@icon-stl.net>
To: Michael Mehrle <michael@w3media.com>
Cc: java-interest@java.Eng.Sun.COM
In-Reply-To: <199511170131.RAA20142@vv.val.net>
On Thu, 16 Nov 1995, Michael Mehrle wrote:
> class Segment {
>
> private String thePlace = "Unknown";
> private int segmentNumber;
>
> Segment (int number) {
> segmentNumber = number; // *here's the bad boy, shouldn't it say:
> // this.segmentNumber = number; ?
> }
>
> Segment(int number, String aPlace) {
> this(number);
> thePlace = aPlace; // also here: this.thePlace = aPlace; ?
> }
this.segmentNumber isn't necessary because segmentNumber isn't ambiguous.
The search for the variable begins in the method and then proceeds to
the class.
Here's another example:
class Foo {
int number = 42;
void bar {
int number = 3;
System.out.println( number );
System.out.println( this.number );
}
}
This prints:
3
42
Pat
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