Andreas Andreakis wrote:
I agree, that it is not a beautiful solution.
But the problem is, that you can´t tell if two Objects are equal if
you dont define equals() , hashcode() on your own. How will your
dublication-preventing Rule look like ?
I would simply implement the equal and hashcode methods :-)
It is general good practice to do so and it is quite easy: an equals
method is almost trivial, and for the hashcode you can use e.g.
http://www.javapractices.com/Topic28.cjp if you want...
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