why default constructors are need?

[lovekang]

The code instuctors in my project, say I need default constructors.
but I don't know why.

As I know the default constructors are automatically added and compiled by the jvm unless any constructors other than default constructor exist.

if default constructor is not there, and I use the default consturctor compile time error found.

any comments are welcomed.
Thanks.

 

[Diancecht]

AFAIK, only the default constructor with no parameters is automatically added.

Default constructor

Cheers,
Dian

 

[stefanwagner]

A defaultconstructor may be useful, if your Class is called via reflection, class.forName ("NameOfClass").

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