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Il seguente esercizio operativo serve per prendere confidenza con:
- Libreria Java Servlets & JSP
- Libreria Log4J
Dettagli:
- Si richiedono 5 livelli di log (qui ne sono mostrati solo 3 per semplicità)
- Si richiede di poterli configurare modificando un solo punto (es 5 var nascoste nel form)
- Si richiede di poter configurare la password (idem come sopra)
- Se la password è errata il sistema registra su un log l'errore e non fa nulla, ripresentando la maschera.
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On Friday, at Gioorgi.com we look for interesting sites to give you a shot.
Whe have found this site, “managed by an international team of developers, researchers, and volunteers with the goal of making world statistics available in a thought-provoking and time relevant format to a wide audience around the world”.
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In un articolo del corriere della sera del 19 novembre 2008, leggiamo un inciso che dà un’idea della crisi in atto. Si riporta una discorso del ministro del Tesoro Henry Paulson (grassetto nostro):
Paulson [...] ha spiegato che, anche se la crisi rimane grave, non è cosa da poco che il sistema sia sopravvissuto a una spaventosa distruzione di ricchezza. Ed ha fornito un dato impressionante: le istituzioni che nei mesi scorsi «sono fallite o hanno vissuto una situazione che equivale a un fallimento», e cioè Bear Stearns, IndyMac, Lehman Brothers, Washington Mutual, Wachovia, Fannie Mae, Freddie Mac e il colosso assicurativo Aig, all' inizio del 2008 avevano un patrimonio complessivo di 4,7 trilioni di dollari: una cifra pari a due volte e mezzo il Prodotto interni lordo dell' Italia. Una ricchezza andata quasi completamente in fumo.
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A Gioorgi.com
ci occupiamo di software da molto tempo. Giovanni Giorgi respira il software dalla metà degli anni ottanta, quando il Vic 20 fu commercializzato in Italia (abbiamo trovato molti dettagli sul nome e la storia del VIC-20, ma la fonte più attendibili è sempre wikipedia).Dopo così tanto tempo, possiamo affermare uno dei principi fondamentali che qualsiasi persona si occupi di software deve tenere a mente.
Non importa se siete account, ingegneri, responsabili di marketing o semplici sviluppatori junior. Dovete sempre tenere a mente che il software che producete deve essere facile.
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Commodore BASIC as a Scripting Language for UNIX and Windows - now Open Source:
Here is a little background:
This application is a recompiled version of the original Commodore 64 binary - it is not a reimplementation, so while it runs at pretty much the maximum possible speed, it is still 100% compatible. The huge C file in the archive has been produced by feeding the original 6502 code into my static recompiler and optimizing it with LLVM. The original operating system interface (character I/O, LOAD, SAVE etc.) has been reimplemented in native C, so Commodore BASIC interfaces nicely with OS X/Windows/Unix - you can use pipe I/O, and you can pass the filename of a BASIC program on the command line.
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As we have seen, bug tracking tools are a very important piece of your It infrastructure. Some tools aims to be a storing ticketing system (like Remedy), others a simple bug tracking tool. In this second post we are going to analyze one of them, called FogBugz
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We read and report:
Tonight, to clear up some problems with the packaging of the Django 1.0.1 release from Friday, we've released Django 1.0.2; once again, this is a bugfix-only release, and is a recommended upgrade for anyone targeting or using Django 1.0 or Django 1.0.1.
Weblog entry announcing the release is here: http://www.djangoproject.com/weblog/2008/nov/18/102/ Release notes are here: http://docs.djangoproject.com/en/dev/releases/1.0.2/
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At Gioorgi.com, after working with a lot with software for over twenty years, we have envisioned a clear idea about open source. This is the second article of a series tagged “opensource”: the previous one is Open Source for the infrastructure; in such article we started to do some tiny consideration of the destiny of big closed huge framework. Things are getting bigger and bigger, and maintaining big code library is a high cost for software house
In the 2008, when I look at software I ask only a thing: to be simple. Embarrassingly simple. The success of Mac stuff (like ipods, macosx and so on) is based vastly on simple design of ready to use, not annoying stuff.
For this reason, the software is not anymore the focus. Core software should be open source: things like word process are not the future of the business. Things like FaceBook are the future of business.
What you try to sell is your GUI design experience (see things like FogBugz or Wordpress), your networking idea (like Facebook), your focus on search agents (like Google, because too much information is useless by definition).
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We are happy to publish a Chief Editor Direct Note (CEDìN):
Dear readers, our spirit is strong, as our commitment, to deliver to you the better and best article out of there. For this reason, we had worked hard to do the first major revision of the Site. Here the major changes:
Giovanni Giorgi, Chief Editor of Gioorgi.com- New look, featuring context-pages. Pages are different based on sections. The complete look will rollout in the next month. So keep in touch.
- Ajax power: article are loaded via a tiny ajax magic, to reduce site load
- The new "Friday relaxing news", for giving you something to read about.
- A new set of article about software business, the first of them is already out.
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Soundsnap.com: Find and Share Free Sound Effects and Loops
SoundSnap is a very nice site, you can use to download free sounds to build podcasts and so on. Quality is good, and the interface is fast.
This is our Friday relaxing news! Short stories for the weekend! To get the complete list, please look at the relax tag.
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Mantis bug tracking tool 1
Nov 12, 2008 · 2 min read ·
In the previous article we introduced the reader to the bug tracking tools.
In this article we will analyze Mantis, an open source bug tracking tool It is very important to stress you are going to use much more time to set up an open source bug tracking tool. A fraction of this time is for setting it up, but the vast majority of your time will be spent setting it up, customizing it and recovering information on it.
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Modulo1: Java, algoritmi e strutture dati di base.
- Introduzione alle collezioni In particolare Map, TreeMap, ArrayList, Set, tutte del package java.util Classi: Arrays/Collections
- Eccezioni: Gerarchia delle eccezioni. Eccezioni: articolo illustrativo in Italiano
- Unicode e Internazionalizzazione Ottimo Articolo sull'Unicode e i character set in generale Introduzione alla API di internazionalizzazione
- Come si fa ad ordinare una lista utilizzando l'API di Java? Ordina una Enumeration usando due sole chiamate.
- A cosa serve l'interfaccia Map.Entry? Fai un esempio d'uso.
- Che differenza c'è tra Throwable e Exception? Perché OutOfMemoryError deriva da Error e non da Exception?
- A cosa serve ResourceBundle?
- Concetto di Deployment, Jar ecc
- Java e il Web. Specifica delle Servlet & Javadoc
- Specifica HTTP 1.0
- A cosa serve l'interfaccia SingleThreadedModel?
- Perché HttpSession non ha getParameter()? A cosa serve la classe URLEncoder?
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At Gioorgi.com, after working with a lot with software for over twenty years, we have envisioned a clear idea about open source. This is the first article of a series tagged “opensource”: let’s start!
Richard Stallman Vision, based on GNU open source idea, is too radical from our point of view.
Stallman GNU License is based on a “copyleft” idea, which gives everyone the freedom to look at others’work, without taking credits for it. The license vision is very strict, so consulting is the natural option for an IT business based on GNU software, which is drived by Univestities, because of its basic freedom statement. Closed and paid software is still widely used, but open source is the key for the next revolution; let’see why.
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L’andamento delle borse negli ulti giorni (soprattutto la prima settimana di Novembre) non è stata influenzata positivamente né dalle elezioni americane (che portano un presidente con un consenso largo e diffuso) né dall’annuncio della buona salute di Unicredit (che incrementerà gli investimenti alle aziende meritevoli).
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