Nunca mas claro que eso, thanks Sang Shin u rock! that explanation was really clear!
2013/12/4 Sang Shin <[email protected]> > On 11/30/2013 10:03 PM, Pavitra Gupta wrote: > >> An item of a collection has to be object type. Why does a collection >> can't take primitive type? Why was it designed this way? >> > > The reason is if we allow primitive type in an collection, there is no way > to know > if it has been set or not. In other words, there is no value that can be > used to > indicate if it is set or not. (Note that 0 is valid int value.) > > If requiring it to be Object type, we can check if it is null or not. > > -S > > -- >> You received this message because you are subscribed to the Google Groups >> "JPassion.com: Java Programming" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> Visit this group at http://groups.google.com/group/jpassion_java. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > > -- > ------------------------------------------------------------------- > Sang Shin, [email protected] > Founder and Chief Instructor of JPassion.com (JavaPassion.com) > http://www.linkedin.com/in/javapassion (Linkedin) > http://twitter.com/javapassion (Tweeter) > Life is worth living... with Passion! > 5-day Web Services programming codecamp: Dec. 9th-13th > Practically Free 3 to 5 days Live, Hands-on, Online Codecamps on > Java, HTML5, Ruby/Rails, Grails, JavaScript/jQuery, Spring, Android > http://jpassion.com/codecamps > ---------------------------------------------------------------------- > > -- > You received this message because you are subscribed to the Google Groups > "JPassion.com: Java Programming" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > Visit this group at http://groups.google.com/group/jpassion_java. > For more options, visit https://groups.google.com/groups/opt_out. > -- Atentamente Alfonso Bullon Vallejo *Lo que la mente no puede retener, el cuerpo tendrá que soportar.* *Ser hombre no significa ser menos femenino,significa ser menos niño.* -- You received this message because you are subscribed to the Google Groups "JPassion.com: Java Programming" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at http://groups.google.com/group/jpassion_java. For more options, visit https://groups.google.com/groups/opt_out.
