Performance

[maha devan]

Hi
Anybody pls clarify my doubt
I am creating an object and passing 8 parameters to the constructor..
Can i pass any number of parameters to a constructor..??

I want to know
1. Is it a bad design
2. Will it affect the performance of my program in any way..
Anybody pls clarify my doubts
Thanks in Advance

[Mani Ram]

MD: Can i pass any number of parameters to a constructor..??
Sure.
MD: Will it affect the performance of my program in any way..
I don't think so.
MD: Is it a bad design
Might be. Might not be.
Why can't you group the individual parameters with an object?
For example,
Replace

public Worker(String firstName, String lastName, String initial, int age,
              String addressLine1,  String addressLine2, String zipcode)

with

public Worker(Name name, int age, Address address)

Where Name object will contain the firstName, lastName & the initial. And the Address object will contain the address details.

[Hanna Habashy]

hi:
personally I think it is a bad design to pass 8 parametes to a constructor or a method. I think the max number should be 4, and less is better.
But again, it is my own opinion.

[Jeanne Boyarsky]

Martin Fowler agrees with what Hannah said in his classic refactoring book.

[Ilja Preuss]

Originally posted by Jeanne Boyarsky:
Martin Fowler agrees with what Hannah said in his classic refactoring book.

See for example http://www.refactoring.com/catalog/introduceParameterObject.html