Having lots of parameters in a constructor

Question

Is it wrong to have a lot of parameters inside a constructor? Like 10 to 15 parameters? Because I was designing a class where a constructor will have lots of parameters, for

Answer 1

1. In general, if you find yourself have too many parameters, that means you don't have enough low-level classes. In your case, you could have a class Name { /* fname, lname, initial, */ } and perhaps a class Contact { /* email, phone */ }

2. When you extend your class, have the constructor take the base as one parameter, and then add the new extra parameters. (You probably mean Employee will extend Person, rather than vice versa, so public Employee (Person person, Company company, String employeeId) { super(person); this.company = company; this.employeeId = employeeId; }

Good question!