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Re: Constructors order of invocation

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On 4/3/2011 5:24 AM, Eric Sosman wrote:
...
> The pattern above (S3->S2->S1->Object->S1->S2->S3) always
> runs as described, unless somebody throws an exception or calls
> System.exit() or takes some similar drastic action that aborts
> the construction. All you can hope to control is which of several
> possible S3/S2/S1 constructors is used, for classes that have more
> than one....

Although I agree in general with this explanation, it does ignore one
way of changing the patter of constructor calls.

A constructor can start by invoking another constructor in the same
class, instead of a superclass constructor. In that case the pattern
might be S3->S3->S2. It is useful for providing default constructor
parameters.

Patricia

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Constructors order of invocation Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-02 21:59 +0200
  Re: Constructors order of invocation Lew <noone@lewscanon.com> - 2011-04-02 17:20 -0400
  Re: Constructors order of invocation Roedy Green <see_website@mindprod.com.invalid> - 2011-04-02 21:33 -0700
  Re: Constructors order of invocation Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-03 11:07 +0200
  Re: Constructors order of invocation Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-04-03 08:24 -0400
    Re: Constructors order of invocation Patricia Shanahan <pats@acm.org> - 2011-04-03 08:55 -0700
      Re: Constructors order of invocation Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-04-03 14:16 -0400

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