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Date: Sun, 24 Apr 2011 14:42:01 -0700
From: Patricia Shanahan <pats@acm.org>
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Subject: Re: Is it sign of bad Object Oriented programming?
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.java.help:644

On 4/24/2011 2:26 PM, Lew wrote:
> Patricia Shanahan wrote:
...
>> Consider an arithmetic type Widget, like BigInteger, with a multiply
>> method that returns the Widget representing the product of this and a
>> Widget argument.
>>
>> Now write Widget's square method:
>>
>> public Widget square() {
>> return multiply(this);
>> }
>>
>> Is that what is being discussed?
>
> Of course, the OP will have to clarify this, but the example given was:
>
> myObj.myMeth(myObj)
>
> This represents a client, not 'this', calling a method that takes the
> reference itself as an argument. Stefan Ram gave a motivating example:
>
> System.out.println( System.out );
>
> Your example doesn't fit the proffered pattern.
>

OK. Suppose Widget does not offer a square method, but I need the square
of the Widget referenced by x:

Widget xSquared = x.multiply(x);

Patricia