Re: Zmienna z klasy potomnej w klasie bazowej

Article View: pl.comp.lang.java

Article #153622

#153622

From: npe
Date: Sat, 27 Oct 2012 21:20

45 lines
1477 bytes

Masz dwie opcje:

1. Brzydsza* - w klasie bazowej zrobić sobie pole o widoczności protected:

class Base {
   protected char c;

   public void doSth() {
      System.out.println(c);
   }
}

class Sub extends Base {
   public Sub() {
     this.c = '@';
   }
}

2. Ładniejsza* - w klasie bazowej zrobić sobie abstrakcyjny getter:

class Base {
   protected abstract char getC();

   public void doSth() {

      char c = getC();

      System.out.println(c);
   }
}

class Sub extends Base {
   public Sub() {
   }

   @Override
   protected char getC() {
     return '@';
   }
}

* To moja osobista opinia, można mieć inne zdanie
-- 
npe

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From: npe <npe@noip.org>
Newsgroups: pl.comp.lang.java
Subject: Re: Zmienna z klasy potomnej w klasie bazowej
Date: Sat, 27 Oct 2012 23:20:17 +0200
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