How constructors differ from methods

The info come from javaworldhttp:
   source://www.javaworld.com/jw-10-2000/jw-1013-constructors.html
now list the contents as fallows for my workbook

   1:Constructors has one purpose in life:To create an instance of a class;
   2:we can not use the natice,abstract,final,synchronized,static to it;
   3:Constructors have no return type,not even void;
   4:constructors have the same name of class;
   5:the use of "this" and "super" ect.

all the defference in image: