Question

Is there any sense to declare default constructor in Java?

class MyClass {
  public MyClass(){}
  public MyClass( T someArgs){
    //somecode
  }

}

Answer 1

Yes, when you have other constructors.

• It is required when you want to
  create object without passing any
  parameters to constructor.

• In most cases it is required for
  reflection, especially when you work
  with certain reflection-based
  frameworks and libraries (e.g. serialization, Hibernate, Hessian).

• Using setters instead generally may
  give you better control. It also
  works well with inheritance (where
  you’d need to explicitly call the
  constructor for all specialized
  classes, as constructors are not
  virtual.