Core Java Pertanyaan dan Jawaban Wawancara

Question: What is the difference between constructors and other methods in core java?

• Constructor will be automatically invoked when an object is created whereas method has to be called explicitly.
  
• Constructor needs to have the same name as that of the class whereas functions need not 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 these, the compiler automatically inserts a call to the parameterless super class constructor.