narasimulu

 Profile Answers by narasimulu 

• Feb 16th, 2009

 

Function is a block of code, it can return a value.
Constructor can't return a value.

amitmathur

 Profile Answers by amitmathur 

• Feb 27th, 2010

 

Constructors get automatically invoked when its class object is created; whereas method has to be explicitly called.

Constructors need to be have the same name whereas function need not to be the same.

There is no return type given in a constructor signature (header). The value is this object itself so there is no need to indicate a return value.

There is no return statement in the body of the constructor.

The first line of a constructor must either be a call on another constructor in the same class (using this), or a call on the superclass constructor (using super). If the first line is neither of there, the compiler automatically inserts a call to the parameterless super class constructor.