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  • Axis 1.x payload debug

    calendar Sep 5, 2010 · 1 min read
     en knowledgebase  · developement java tip
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    Axis 1.x payload debug

    When using Axis to send data to a web service, you can set the logger level on org.apache.axis.transport.http.HTTPSender to DEBUG to see what’s going on. 

    Anyway be careful: the system will produce a lot of logs, so use it only in developement mode! 

    Here’s a sample in log4j.properties: 


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  • Closure in Java: fast and nice!

    calendar Feb 26, 2010 · 4 min read
     programming_languages  en evergreen lang  · closure functional-java functional-programming html http java
     ·
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    Working for two very important Banks, I have the need to play with Closure in Java. I have a lot of trouble looking at a good description of the subject, until I read a post on StackOverflow.

    I have decided to re-cook this subject, adding a my specialized Example also.

    Let’s start!


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  • Clojure Review

    calendar Feb 5, 2010 · 1 min read
     en knowledgebase reviews  · books development java lisp oreilly
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    Clojure Review

    Book review by Stefano Fago: This book introduce one of most interesting  language of new wave of functional programming. You will find a complete overview of clojure language focusing in functional paradigm that can be the real obstacle for a standard developer. The author try to follow you on learning different subject with a lot of examples but sometimes it need more reflection and time to master some arguments and a syntax that may seems obscure. The book is a good starting point to introduce you to a new way of programming but also to learn some particulars aspect of Java. To consider a complete but not easy reading. However a book to have!


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  • Mastering clusters of Unix machines part2: the right tools

    calendar Oct 11, 2009 · 1 min read
     en featured knowledgebase  · business internet java linux virtualization
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    Mastering clusters of Unix machines part2: the right tools

    After working with unix for years, we noticed it is difficult to get a very uniform approach to unix management.

    Often different Linux distributions share very little, configuration is different every time. Worst, some good unix tools (like cron, syslog, etc) can be used in a distributed environment, but are very difficult to configure, very user unfriendly and so on.


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  • Apache Rampart

    calendar Sep 30, 2009 · 1 min read
     en knowledgebase software  · apache java
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    Apache Rampart
    Welcome to Apache Rampart

    Rampart is the security module of Axis2. It secures SOAP messages according to specifications in the WS-Security stack.

    via Apache Rampart .

  • Erlang Book Review

    calendar Jul 19, 2009 · 7 min read
     en erlang featured lang reviews software  · books development erlang framework functional-programming guide http ideas internet java oreilly performance programming-languages
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    Erlang Book Review

    After reading an interesting article on Erlang  and Java interoperability, I have decided to dedicate my spare time to Erlang.

    O’Reilly has just published a wonderful book on Erlang, so I decided to dive into it.


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  • Jython 2.5rc4 has been released

    calendar Jun 25, 2009 · 1 min read
     en knowledgebase  · java jython news python
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    Jython 2.5rc4 has been released

    Released on June 8, 2009  Jython 2.5RC4 is out!

    We have followed Jython in the past months, and it seems promising looking at the jython newsletter.

  • Evolving concurrency, like memory management did

    calendar Jun 11, 2009 · 3 min read
     en erlang featured software  · development features framework http ideas internet java lang news performance python
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    Evolving concurrency, like memory management did

    As processors become faster and multiprocessor systems become cheaper, the need to take advantage of multithreading in order to achieve full hardware resource utilization only increases the importance of being able to incorporate concurrency in a wide variety of application categories.

    In this article we are evaluting a new approach to the concurrency. In the last five years computers are becoming even more parallel. Intel is pushing multi-core achiteture also on commodity personal computers. Neverless the computing power is ofter not well used: one again, hardware is a step head of our day-by-day software development. Remember when the 80286 came into light. The 286 was able to provide a multi-programming architecture but without memory management protection. We had to wait 386 hardware to see software working on preemptive multi-tasking, because software cannot cope with unprotected memory. In one word, it costs too much to develop a operating system without the new features the 80386 bring to us. What about concurrent programming? Can we look similarities in the  concurrency field?


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  • WinRun4J

    calendar Jun 10, 2009 · 1 min read
     en knowledgebase  · java java-espresso
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    WinRun4J
    WinRun4j is a java launcher for windows. It is an alternative to javaw.exe and provides the following benefits:
    • Uses an INI file for specifying classpath, main class, vm args, program args.

    • Custom executable name that appears in task manager.

    • Additional JVM args for more flexible memory use.


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  • Java HttpClient and Load Balancer bad interactions

    calendar May 21, 2009 · 2 min read
     en knowledgebase software  · apache bug complex http java performance system unix web
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    Java HttpClient and Load Balancer bad interactions

    Working for a very big customer, I found a very nasty interaction between Sun HttpClient (JDK 1.4) and Http  Load Balancers.

    In a complex network environment, sometimes you can experience low level TCP/IP comunication errors, because sometimes HttpClient get confused and hangs.

    The bad behavior of Sun HttpClient is well known: some guys suggested me to use the Axis Web Client. Anyway you can solve the issue adding these three parameters to the JVM launch line


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  • Changing Eclipse JVM

    calendar May 19, 2009 · 1 min read
     en knowledgebase  · eclipse java trouble
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    Changing Eclipse JVM

    Sometimes Eclipse Ganymede will not run if it is unable to find a jdk 1.5 or greater.

    Sometimes Eclipse Ganymede  hangs abruptly if you delete the jdk  it was using and if you have set only a JDK 1.4 on your path (Eclipse needs a jdk 1.5 or greater…).


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  • jrecordbind: fixed length file parser

    calendar Apr 15, 2009 · 1 min read
     en knowledgebase software  · java xml
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    jrecordbind: fixed length file parser
    === JRecordBind ===

    A tiny and super fast library that aims to

    • map fixed-length lines to bean instances, ready to be chewed by an import procedure (Unmarshaller)

    • and export record beans into a fixed-length file (Marshaller).

    take al look to it at jrecordbind: Home. It is a very good library, I will suggest for solve these issues, because it has XML integration too


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  • April 0.2 Application Performance Framework

    calendar Apr 15, 2009 · 3 min read
     en knowledgebase software  · april espresso java performance project redscorpion spring
     ·
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    April 0.2 Application Performance Framework

    April (Application Performance Framework) is a super-light application framework based on Spring, featuring:

    • An Aspect Oriennted Programing Performance Monitor, which try to increase performance on the fly
    • A super-light XML-RPC communication framework

    April first commitment is “be lite, be pluggable” and do not re-invent the wheel. I am happy to describe here how it works the Beta 0.2, called “Fat Cat” by friends.


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  • H2 Database Engine

    calendar Apr 9, 2009 · 2 min read
     en knowledgebase sql  · database java jug
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    H2 Database Engine

    The creator of HSQL has created a new Java database called H2. We have tried it!


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  • Java in un Espresso, Parte III: April

    calendar Apr 7, 2009 · 2 min read
     it software  · april ejb espresso guide hosting j2ee java java-espresso lamp spring
     ·
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    Java in un Espresso, Parte III: April

    Nei precedenti articoli abbiamo visto come creare un applicazione Java agile, evitando il blasone delle specifiche J2EE. Dopo aver valutato (scartandola) una soluzione 2-tier molto simile a quelle fattibili in PHP, ci siamo focalizzati su una soluzione basata su Spring.

    Come test, abbiamo sviluppato a Gioorgi.com una applicazione didattica che abbiamo chiamato “April”.


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