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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi A - F > Fondamenti di architettura e programmazione > [HASHTABLE] Help
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nous
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Originally posted by nous
Se non ho capito male la Hashtable è popolata in ogni costruttore..così facendo non è condivisa ma ne crei una per ogni istanza di classe.


Ok , avevo capito male :)
Mi sono riletto tutto il thread.

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29-01-2006 12:28
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trygun82
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Ti sono vicino.....
Anche noi stiamo cercando di capirne qlc!

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30-01-2006 11:53
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nous
.:Retore Pomposo:.

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Off-Topic:

Si ma io non devo dare l'esame, la mia era pura curiosità accademica :)

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Cristian,il Nous che invoglia ^_^

"La capa è troppo in la,e la sbarba è troppo giovane..mi sa che qua si va in bianco"
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30-01-2006 12:12
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sandrino83
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ma come faccio a condividere la hashtable?

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31-01-2006 13:39
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Joda
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Originally posted by sandrino83
ma come faccio a condividere la hashtable?


con una classe astratta puoi dichiararla protected.

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31-01-2006 13:59
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sandrino83
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si ho già letto quello ke dicevi tu ma non funziona lo stesso......crea sempre e comunque una hashtable x ogni classe.....

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31-01-2006 14:01
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sandrino83
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allora: io scrivo così

abstract class Istruzione

protected Hashtable<String,Integer> memoria = new
Hashtable<String,Integer>();

sbaglio qualcosa?

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we are just two lost souls swimming in a fish bowl year after year....running over the same old ground....what have we found.......
31-01-2006 14:20
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Joda
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si, la definizione è giusta.

dunque le interfaccie non possono creare istanze di oggetti, quindi la devi creare in una classe essa sia astratta o statica, fai una cosa oltre a definirla protected, definiscila anche static come disse nous.

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sandrino83
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però devo dichiarare public le classi estese giusto? ame funziona così.........

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31-01-2006 14:44
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Urborg_team
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Originally posted by zyx
ma io ho dichiarato "istruzione" come interfaccia.... e funziona


e come l'hai dichiarata interfaccia..mostra il codice please!

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31-01-2006 14:45
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Joda
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Originally posted by sandrino83
però devo dichiarare public le classi estese giusto? ame funziona così.........


ovvio, tutte le classi che devono essere usate in altre parti devono essere public.

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31-01-2006 14:48
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sandrino83
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ok.......allora ci siamo.......grazie

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31-01-2006 14:53
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Joda
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Originally posted by sandrino83
ok.......allora ci siamo.......grazie


prego

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unid
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 [hashtable] Ricapitolando

Dunque io l'hashtable lo uso così:

abstract class Istruzione{

Hashtable memoria=new Hashtable();

.......

}

poi nelle varie classi accedo e inserisco elementi con .get e .put.. solo che se in Dichiara uso .put e metto qualcosa nell'hashtable memoria non riesco ad accederci in Assegna... mi dice empty hashtable...

QUINDI... chiedo se qualcuno di voi ha trovato il modo per farlo funzionare....

INOLTRE... siete riusciti a impaginare le stringhe che deve stampare in modo corretto? a me stampa tutto quello che dovrebbe stampare ma lo stampa sfalsato....
31-01-2006 22:43
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Urborg_team
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Io l'ho scritta così

abstract class Istruzione{

public static Hashtable<String,Integer> memoria= new Hashtable<String, Integer>();

abstract public void esegui();

...


ma purtroppo non funziona!

Intervento del moderatore:
troppo codice...limitiamoci nelle pubblicazioni del codice grazie!

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Last edited by ciops on 01-02-2006 at 15:59
01-02-2006 11:51
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