How to create new default instances of objects that are stored in object variables?

How to create new default instances of objects that are stored in object
variables?

References

Reference NO 1

http://stackoverflow.com/questions/13636274/how-to-create-new-default-instances-of-objects-that-are-stored-in-object-variabl

Reference NO 2

http://math.hws.edu/javanotes/c5/s1.html

Reference NO 3

http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_classes.html

Reference NO 4

http://www.artima.com/designtechniques/initializationP.html

Reference NO 5

http://processing.org/tutorials/objects/

Reference NO 6

http://l.autohotkey.net/docs/Objects.htm

Reference NO 7

http://php.net/manual/en/language.oop5.references.php

Reference NO 8

http://oreilly.com/catalog/javapt/chapter/ch04.html