Loosen Constructor super()/this() call restrictions (original) (raw)

Marek Kozieł develop4lasu at gmail.com
Mon Mar 23 02:56:49 PDT 2009

2009/3/23 Howard Lovatt <howard.lovatt at iee.org>:

A few notes:

3. You shouldn't be able to access super fields or any instance methods before super.  -- Howard.

Can you ensure that ?

class A { private Bar bar;

  public A(Bar bar) {
     setBar(bar);
  }

  protected void setBar(Bar bar) {
     this.bar = bar;
  }

}

class B extends A { private Bar bar; private Foo foo;

  public B(Bar bar, Foo foo) {
     super(bar);
     this.foo = foo;
  }

  protected void setBar(Bar bar) {
     this.bar = bar;
     this.foo = bar.foo;
  }

}

Will code have same effect when constructor will be : public B(Bar bar, Foo foo) { this.foo = foo; super(bar); }

-- Pozdrowionka. / Regards. Lasu aka Marek Kozieł

http://lasu2string.blogspot.com/

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