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JSR

I'm very proud to announce that in order to be fully compatible with the new multi-core era, we (the lambda expert group) have decided to deprecate the class syntax in Java 8 and to remove it in Java 9. With the introduction of lambda, classes are not needed anymore and are now seen as stimagata from the past. so instead of writing a class User like this: public class User {  private final...
on Apr 1, 2013

Community

   In last week was born the SouJavaLivre in Brazil, its main objective is disseminating and help to envolve the java free and  the OpenJDK in country. For does that there are some sub-projects:    Support to Adopt OpenJDK : With list in Portuguese also some tutorial in Portuguese to help the people to adopt the JVM's reference, but helping and with integration...
on Jan 22, 2013
    Nowadays there are too many NOSQL database, with different architecture and data structure. However with much variety they share one thing in common: Only search information from the keys. A good option is uses other service to help the NOSQL databases. In this post will how the Lucene does work together a NOSQL database, join two world in one application.     The...
on Oct 13, 2012
Meruvian's blog is here.. yes, in java.net now. This is because we believe that we will get more attraction if blog here. and we are blogging in English here. We also have our own blog server power by Apache Roller, take a look http://blogs.mervpolis.com. The main reason we blog here, to promote what is Meruvian and the work around Meruvian. A lot of friends asked about how can Meruvian survive...
on Sep 21, 2012
Release the newest version of the framework to persist objects in Apache Cassandra in easy way. Among improvement is the JPA annotations, also JPQL.   JCassandra jCassandra=persistence.createJCassandra("select * from Person"); List<Person> persons=jCassandra.getResultList(); table 1: sample using JPQL in Easy-Cassandra This version has the improvements below: Supporting...
on May 26, 2012
  Running the new version of the Easy-Cassandra framework it main objective is making it easy the communication between Apache Cassandra and your application in java. With it you able create, update, retrieve, delete the java's objects in easy way and simple, for this you must add some annotation in Class and fields.   Characteristics     An ORM easy to use in Cassandra...
on Mar 17, 2012

Security

A quick, hopefully readable analysis of this week's security exploit and fix over at my new blog
on Jan 15, 2013

Databases

        Launched the latest Easy-cassandra version, that come with improvements to manage multi-nodes. Use many node is very usefully in Cassandra because avoid bottlenecks, fault tolerance, elasticity.     After have multi-nodes in Cassandra, the next step is divide task between their. Secondly join the databases like only one ( reply all information among their...
on Oct 3, 2012
Release the newest version of the framework to persist objects in Apache Cassandra in easy way. Among improvement is the JPA annotations, also JPQL.   JCassandra jCassandra=persistence.createJCassandra("select * from Person"); List<Person> persons=jCassandra.getResultList(); table 1: sample using JPQL in Easy-Cassandra Easy-Cassandra 1.0.8 Easy-Cassandra 1.0...
on Apr 21, 2012

J2EE

While I don't normally blog about the exiting world of JVM command line options, this new 7.0 option, which allows you to rotate to a new GC log file, was just so exciting... err... not so widely published that I decided to share. Of course these options only apply when you've used the -Xloggc: option. The settings are; UseGCLogFileRotation, default value: false NumberOfGCLogsFiles, default value...
on Aug 20, 2012

Open Source

OSCON Friday July 20, 2012 live streaming Speaker Slides and Video Table of Contents 1 10am Declarative web data visualization using ClojureScript 2 11am Client/Server Apps with HTML5 and Java 3 11:50am Hacking JavaFX with Groovy, Clojure, Scala, and Visage 1 10am Declarative web data visualization using ClojureScript Kevin Lynagh What is Visualization? EdgeBio : bioinformatics...
on Jul 20, 2012
OSCON Monday July 16, 2012 live streaming Table of Contents 1 9:00am Building applications with MongoDB: An introduction 2 1:30pm Getting Started with OpenStack 3 1:30pm Scala Koans 1 9:00am Building applications with MongoDB: An introduction Steve Francia slides: http://www.slideshare.net/spf13/oscon-2012 excerpts: IDEAL horizontal scaling cloud compatible, commodity...
on Jul 17, 2012
I'm at OSCON in Portland, Oregon this week. I will be posting my notes here.
on Jul 17, 2012
It's been two years since I posted here last, but life has been busy with open source all the same. Having helped a startup with their open source thinking, I'm now independent again and contributing much of my time to the Open Source Initiative (OSI) and to The Document Foundation (TDF), as well as offering open source policy and practice consulting. That first association with OSI is...
on Jan 23, 2012

Education

Boyer-Moore (BM) Overview According to Wikipedia, the Boyer-Moore algorithm "is an efficient string searching algorithm that is the standard benchmark for practical string search literature. It was developed by Robert S. Boyer and J Strother Moore in 1977. The algorithm preprocesses the string being searched for (the pattern), but not the string being searched in (the text). It is thus well-...
on May 21, 2012
This article has the main objective show a little example for persist information in Cassandra using java. For demonstrated the persistence with Cassandra will used the Easy-Cassandra, a framework open source for use this SGBG in an easy mode.   @ColumnFamilyValue(nome = "person")// public class Person implements Serializable {   private static final long...
on Jan 24, 2012

Programming

Knuth-Morris-Pratt (KMP) Overview According to Wikipedia, the Knuth-Morris-Pratt algorithm "searches for occurrences of a "word" W within a main "text string" S by employing the observation that when a mismatch occurs, the word itself embodies sufficient information to determine where the next match could begin, thus bypassing re-examination of previously matched characters". Being 'A' the...
on May 10, 2012
Welcome to the 198th issue of The Java(tm) Specialists' Newsletter sent to you from Chania in Greece. My readers in colder climates frequently get annoyed when I tell them that "life's a beach". They imagine us having constant sun here. It's not true. We do sometimes have torrential rains and cold weather. It even snows here occasionally. In fact, the delivery...
on Feb 14, 2012

Performance

In some earlier posts, I've talked about Java threads, Java Thread Overhead, and Amdahl's Law and Parallel Processing Speed-Up. My next investigation in this series is Java 7's new Fork/Join Framework. I plan to spend quite a lot of time in this particular investigation. For one, Java Threads have been around for a long time, and undoubtedly there are many resources available that discuss them;...
on Apr 16, 2012

Accessibility

                 Easy-Cassandra is a framework ORM API and a high client for Apache Cassandra in java, with this is possible persist information from the Java Object in easy way. For this is only necessary add some annotations in some fields and your class. It works like an abstraction's tier in the Thrift, doing call for Cassandra. The Easy-Cassandra...
on Feb 21, 2012