Build your own Application to access Twitter using Java and NetBeans: Part 4

http://www.packtpub.com/article/build-custom-application-twitter-java-netbeans-4

In this final part of my article series, you’ll learn how to convert the URLs from your friends’ timeline into clickable hyperlinks…

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VirtualBox 3.1 Beginners Guide : Review from Ubuntu Tutorials

I am a big fan of VirtualBox as a desktop virtualization technology. I have it installed on my machine and I’m constantly using it to try out new distributions and learn new technologies. It really is a great tool! I have seen it grow from a new project into the fully featured, efficient virtualization competitor that it is today.

I was recently sent a copy of the newly released “VirtualBox 3.1 Beginner’s Guide“, which outlines deploying and managing a cost-effective virtual environment using VirtualBox. I want to thank Packt Publishing for sharing a copy with me, and I’d like to share my review of the book here. I hope some of you will take the time to check out the Packt Publishing website as a resource for technical books.

VirtualBox 3.1 Beginners Guide

The first thing I have to say about this book is that it is very detail oriented.  It truly is a beginners guide. I’m positive I could give this book to my father and he’d be able to install, configure and run VirtualBox on Windows or Linux. It outlines, in step-by-step detail, everything you’d like to know about VirtualBox. Even though I consider myself a Virtualbox veteran, I followed along with some of the tutorials and was impressed that no detail was left out.

One of the things that really stands out about this title is that it includes a huge number of screenshots. The number of screenshots in the book provide any beginner with the visual roadmap they need to complete the task at hand. It covers installing VirtualBox on both a Windows and Ubuntu host, as well as installing and configuring the reverse as guests. If you’ve never installed VirtualBox before, you’ll have an installation up and running in just a few minutes.

Beyond installation and configuration, this book goes into detail regarding the command line options (I learned quite a bit from this chapter!) as well. VirtualBox provides a full set of command line tools for starting, stopping, configuring, cloning and creating virtual machines. This makes it a perfectly reasonable candidate for a headless server virtualization solution!

This book covers guest additions, disk and image creation and management, all networking options and how they differ, using and creating virtual appliances, using snapshots and even remote management. It really is a good resource for getting started with Virtualization. I’m glad to have a copy of this book in my collection.

The sections that were the most useful for me were the networking and command line chapters. I was not familiar with any of the command line tools, and the networking was a little blurry for me. Before getting a copy of this book I was unfamiliar with virtualized networking beyond NAT and Bridged. This book went into enough networking detail that I’m very comfortable with each of the networking options and in what situations each might apply. This will really boost my efficiency and productivity with VirtualBox.

For anyone wanting to learn more about virtualization or doing research into cost-effective virtual environment solutions, I would highly recommend VirtualBox 3.1 Beginner’s Guide.

If this article has been helpful, please consider linking to it.

via ubuntu-tutorials.com

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Problem with MySQL and Tomcat Turnkey Appliances connection solved

After two frustrating days of testing, testing and guess what? More testing! Er… sorry for being a little bit rude, but I haven’t slept well in two days…  Let me start again… After two frustrating days of testing & debugging, I finally solved the communication problem between my MySQL and my Tomcat Turnkey Appliances.

The following error kept showing up at my Mozilla Firefox screen:

Error 1: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure Last packet sent to the server was 0 ms ago.)

The problem is that the Tomcat Turnkey Appliance includes Tomcat 5.5 and it comes along with a lot of security restrictions. So I had to add the following line to the $TOMCAT-CONFIG/policy.d/04webapps.policy file:

permission java.net.SocketPermission "127.0.0.1:3306", "connect";

And all this thanks to kalkulator-kredytowy´s answer at http://stackoverflow.com/questions/2172570/tomcat6-cant-connect-to-mysql-the-driver-has-not-received-any-packets-from-the

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Missing logs - Tomcat 5.5 + Ubuntu 8.04 - Server Fault

Summary

Freshly-installed (via apt-get) Tomcat on a freshly-installed Ubuntu 8.04 LTS 64-bit works, but doesn't (seem to) log anything. See also "What I've Tried" and "Closing In On It" below.

More Detail

Because the package maintainers have done a HUGE amount of the work, getting basic things working has been a fairly straightfoward matter of running apt-get and pointing Tomcat at the right JDK. And it works. But it doesn't appear to log anything.

As far as I can tell, the logging infrastructure is controlled via logging.properties files (since this is Tomcat 5.5, not Tomcat 5.0), including a central one (which you can override per web app) at /etc/tomcat55/logging.properties (/etc/tomcat55 is symlinked as /var/lib/tomcat55/conf). I'm not overriding it, and I can't see why I'm not seeing something. Here's the file:

 1 1 # Licensed to the Apache Software Foundation (ASF) under one or more   2  2 # contributor license agreements.  See the NOTICE file distributed with   3  3 # this work for additional information regarding copyright ownership.   4  4 # The ASF licenses this file to You under the Apache License, Version 2.0   5  5 # (the "License"); you may not use this file except in compliance with   6  6 # the License.  You may obtain a copy of the License at   7  7 #   8  8 #     http://www.apache.org/licenses/LICENSE-2.0   9  9 #  10 10 # Unless required by applicable law or agreed to in writing, software  11 11 # distributed under the License is distributed on an "AS IS" BASIS,  12 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  13 13 # See the License for the specific language governing permissions and  14 14 # limitations under the License.  15 15   16 16 handlers = 1catalina.org.apache.juli.FileHandler, 2localhost.org.apache.juli.FileHandler, 3manager.org.apache.juli.FileHandler, 4admin.org.apache.juli.FileHandler, 5host-manager.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler  17 17   18 18 .handlers = 1catalina.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler  19 19   20 20 ############################################################  21 21 # Handler specific properties.  22 22 # Describes specific configuration info for Handlers.  23 23 ############################################################  24 24   25 25 1catalina.org.apache.juli.FileHandler.level = FINE  26 26 1catalina.org.apache.juli.FileHandler.directory = ${catalina.base}/logs  27 27 1catalina.org.apache.juli.FileHandler.prefix = catalina.  28 28   29 29 2localhost.org.apache.juli.FileHandler.level = FINE  30 30 2localhost.org.apache.juli.FileHandler.directory = ${catalina.base}/logs  31 31 2localhost.org.apache.juli.FileHandler.prefix = localhost.  32 32   33 33 3manager.org.apache.juli.FileHandler.level = FINE  34 34 3manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs  35 35 3manager.org.apache.juli.FileHandler.prefix = manager.  36 36   37 37 4admin.org.apache.juli.FileHandler.level = FINE  38 38 4admin.org.apache.juli.FileHandler.directory = ${catalina.base}/logs  39 39 4admin.org.apache.juli.FileHandler.prefix = admin.  40 40   41 41 5host-manager.org.apache.juli.FileHandler.level = FINE  42 42 5host-manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs  43 43 5host-manager.org.apache.juli.FileHandler.prefix = host-manager.  44 44   45 45 java.util.logging.ConsoleHandler.level = FINE  46 46 java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter  47 47   48 48   49 49 ############################################################  50 50 # Facility specific properties.  51 51 # Provides extra control for each logger.  52 52 ############################################################  53 53   54 54 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = DEBUG  55 55 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.FileHandler  56 56   57 57 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO  58 58 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = 3manager.org.apache.juli.FileHandler  59 59   60 60 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/admin].level = INFO  61 61 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/admin].handlers = 4admin.org.apache.juli.FileHandler  62 62   63 63 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = INFO  64 64 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = 5host-manager.org.apache.juli.FileHandler  65 65   66 66 # For example, set the com.xyz.foo logger to only log SEVERE  67 67 # messages:  68 68 #org.apache.catalina.startup.ContextConfig.level = DEBUG  69 69 #org.apache.catalina.startup.HostConfig.level = DEBUG  70 70 #org.apache.catalina.session.ManagerBase.level = DEBUG 

The only change I've made is:

1 1 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = DEBUG 

...which was set to INFO like all the others, but I wanted to get it to log something, so I upped it to DEBUG. Naturally I've restarted Tomcat.

I can compile and view a JSP, so again Tomcat is working, but /var/lib/tomcat5.5/logs is stubbornly empty. Even if I force an error by having an invalid JSP or some such, I'm getting nothing.

What I've Tried

• I've been through the steps listed in the Tomcat FAQ for ensuring that the distro hasn't messed things up (they hadn't).
• I've gone looking for a logs directory elsewhere in case it's not /var/lib/tomcat5.5/logs (although that was created by the install).
• Naturally I've restarted Tomcat after making any changes.

One thing I haven't done is to chown everything to be owned by the tomcat55 user that the install created. logs is owned by tomcat55, but a number of the other directories and files are owned by root, though they're world-readable. I haven't done this because (hangs head) I can't quite figure out how to fully back-up the existing tree so I can readily undo the change. The blasted tree has absolute symlinks interweaving /etc/tomcat55, /var/lib/tomcat55, and /usr/share/tomcat55 that I know of. I could tar up each of those, but I don't know for certain I'm not missing something.

EDIT:

Closing In On It

Okay, so I've found that it's writing console-style stuff to /var/log/daemon.log. Whew! At least that gives me a place to start. And it's issuing complaints like:

1 1 jsvc.exec[18819]: Can't load log handler "2localhost.org.apache.juli.FileHandler"  2 2 jsvc.exec[18819]: java.lang.ClassNotFoundException: 2localhost.org.apache.juli.FileHandler 

And I'm not surprised, 2localhost.org.apache.juli.FileHandler isn't a valid class name (packages can't start with digits!). So I'm suspecting that the default logging.properties file is...not good. Will report back.

via serverfault.com

Geez.... It's a good thing I found this excellent information on Tomcat 5.5, because I couldn't find out why there were no logs!

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Install Webmin on Ubuntu Server or Desktop 9.10 Karmic Koala - Andrei DANEASA

I am a big fan of Ubuntu Server. It’s exactly what you need for a server, no fancy UI, just services.
Dealing with all the text configuration files can be a time consuming task and there is something that can help a lot. It’s called Webmin and it is a web interface for configuring your linux box.

You need to install first some perl-related libraries required by webmin:

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libmd5-perl

The you need to download the latest webmin archive (this might change in time). I am downloading the Debian package:

wget http://www.webmin.com/download/deb/webmin-current.deb

(thanks @macrocode)

Install the Debian package with dpkg, not Aptitude:

sudo dpkg -i webmin_1.490_all.deb

* Your downloaded version may differ. Just use the deb package you’ve just downloaded.

Enjoy your Webmin installation at https://[serverIP]:10000 .
What I am normally doing is forwarding the port 10000 out of my router and access my webmin from anywhere on the internet. You can forward it to another port and to be user-friendly and easy-to-remember you can use DynDNS to pick a nice name.

Enjoy!

Related posts:

Install Webmin on Ubuntu Server 9.04 Jaunty Jackalope

Ubuntu 9.10 Karmic Koala released

Install Oracle 10g XE on Ubuntu Server 9.04 Jaunty Jackalope

Ubuntu server upgrade to 9.04

Install subversion for VPS (cPanel) under CentOS

Tags: Jaunty Jackalope, Linux, ubuntu server, webmin

This entry was posted on Thursday, October 29th, 2009 at 6:30 pm and is filed under Linux.You can follow any responses to this entry through the RSS 2.0 feed.You can leave a response, or trackback from your own site.

via webxpert.ro

Excellent article that shows a pretty quick installation process for webmin. I used it in my recently created Ubuntu 9.10 Text-only server. Worked flawlessly.

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Book Review: Virtualbox 3.1 Beginners Guide | Damien Saunders

Book Review: Virtualbox 3.1 Beginners Guide

24. May, 2010 0 Comments

Hi thanks for coming back ... got a question or a comment? or just say hello! Got a question? then say hello @damiensaunders

As far as book reviews go, from personal experience they are much harder to write then a review of a music album or live gig. So when reading VirtualBox 3.1 Beginners Guide by Alfonso V. Romero (Packt Publishing) I was surprised at how easy the book was to read and how an experienced VirtualBox user can dip in and find something new.

VirtualBox is one of my favourite system virtualisation apps that I use on my Mac and my Windows machines. I’ve written about Virtualbox quite a bit and my own guide to install Windows on a Mac is one of my most popular posts.

I would have considered this book more for people starting out with VirtualBox, but the last few chapters and appendix are really for advanced users, quite serious chapters for Linux users or web developers looking at options for virtual appliances.

I can only have kind words for this book – the majority of which anyone would be able to follow. The Guide seems to be more useful for people running Linux and wanting to install Windows. Niftily, the book tries to overcome this with specific sections on how to install VirtualBox for Windows. Any reader will feel happy that the how to install Windows guest section relates to both XP and Win7, I hope there is a future revision of the book to include Mac OSx users.

The book does what it says, revealing the ‘robust capabilities’ of VirtualBox – at the end of the book, I was left unsure why I would want to download and use VirtualBox – but there again, if you’re reading this, the probably you are already using VirtualBox so you can go buy the book without worrying about this.

VirtualBox 3.1 Beginners Guide and the format of this book has a nice approach, there are many headings like ‘What just happened’ for short reviews and every section has a pop quiz that won’t keep you awake at night. These reviews and questions help keep you engaged even when you’re reading this book away from a computer screen.

VirtualBox 3.1 Beginners Guide from Packt Publishing is available now.

Packt Publishing provided a copy of this book for review. Thanks.

Related posts:

1. Virtualbox has a new how to book
2. 15 minute guide to Virtualbox Windows 7 RC1 and your Mac
3. Upgrading to Virtualbox 3.0 and Mac OSx hosts
4. How to install Virtualbox on a Mac
5. HOW-TO install Ubuntu using Virtualbox on a Mac

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via damiensaunders.com

Cool! Another review of my VirtualBox book!

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VirtualBox 3.1 Beginners Guide Review | The PC Report

Here is our first ever book review at The PC Report! We were lucky enough to be sent a digital copy of this book from Packt Publishing to give our opinions on, and I will say straight off that I was impressed with what I read in the book and the quality of the writing. If you want a small sample of the book, Packt has a sample chapter available for download here (PDF link).

If you haven’t already figured it out, the VirtualBox 3.1 Beginner’s Guide, written by Alfonso Romero, is basically a book that covers everything a user needs to know about Oracle VM VirtualBox – the free virtualization application that I wrote a small guide on a few months ago. This book blows my guide right out of the water in the sheer amount of content and the detail the tutorials go into to help you understand everything about VirtualBox.

Read the rest of this review »

via thepcreport.net

Cool! A review of my VirtualBox book!

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Cool! The VirtualBox 3.1 Beginner's Guide is on the #1 Spot in Packt's Website! http://www.packtpub.com/books#

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How to Install VirtualBox Guest Additions | Packt Publishing Technical & IT Book Store

via packtpub.com

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Want to review the VirtualBox 3.1 Beginner's Guide book?

Would you like to review the VirtualBox 3.1 Beginner’s Guide book? Just send an e-mail to Disha Parekh at dishap@packtpub.com and she’ll get in touch with you with all the details. Oh, and don’t forget to tell her you heard it from me J

Posted via email from alromero's posterous

VirtualBox 3.1 Beginner's Guide Book now available !

At last… the book I worked on during the last 6 months or so has been published!

Since virtualization is a pretty popular subject nowadays, I hope this book helps to promote one of the best virtualization software packages available: VirtualBox from Sun Microsystems (now a part of Oracle).

Overview of VirtualBox 3.1: Beginner's Guide

• Get up and running with VirtualBox to start working with your own virtual machines
• Effectively administer and use virtual machines in a home/office environment
• Analyze virtual machines with the most commonly used software tools
• Create your first virtual machine with VirtualBox on Windows/Linux with step-by-step instructions and screenshots

Click on the picture below if you want to see a detailed description:

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Apache Roller - Wikipedia, the free encyclopedia

From Wikipedia, the free encyclopedia

Jump to: navigation, search

This article needs references that appear in reliable third-party publications. Primary sources or sources affiliated with the subject are generally not sufficient for a Wikipedia article. Please add more appropriate citations from reliable sources. (August 2008)

Apache Roller

Developer(s)	Apache Software Foundation
Stable release	4.0.1 / January 13, 2009; 14 months ago (2009-01-13)
Preview release	5.0 Beta1
Written in	Java
Operating system	Cross-platform
Type	weblog server
License	Apache License 2.0
Website	http://roller.apache.org/

Free software portal

Roller Weblogger is a Java-based, full-featured, Multi-blog, Multi-user, Open Source weblog server. Roller was originally written by Dave Johnson in 2002 for a magazine article on open source development tools, but became popular at FreeRoller.net (now JRoller.com) and was later chosen to drive the employee blogs at Sun Microsystems, Inc. and IBM developerWorks blogs. In 2007, Roller became an official project of the Apache Software Foundation.

[edit] Bibliography

• Romero, Alfonso (December 15, 2010). Apache Roller 4.0 Beginner's Guide (1st ed.). Packt Publishing. pp. 388. ISBN 184719950X. http://www.packtpub.com/apache-roller-4-0-beginners-guide/. 

[edit] External links

• Roller website

[hide] Apache Software Foundation Top level projects Abdera · ActiveMQ · Ant · Apache HTTP Server · APR · Beehive · Buildr · Camel · Cassandra · Cayenne · Click · Cocoon · Continuum · CouchDB · CXF · Derby · Directory · Excalibur · Felix · Forrest · Geronimo · Gump · Hadoop · Harmony · iBATIS · Jackrabbit · James · Lenya · Maven · mod_perl · MyFaces · OFBiz · OpenEJB · OpenJPA · POI · Pivot · Qpid · Roller · Shindig · Sling · SpamAssassin · stdcxx · Struts · Subversion · Tapestry · Tomcat · Tuscany · Velocity · Wicket · XMLBeans Jakarta Projects BCEL · BSF · Cactus · ECS · JCS · JMeter · ORO · Regexp Commons Projects Daemon · Sanselan · Jelly Lucene Projects Lucene Java · Droids · Lucene.Net · Lucy · Mahout · Nutch · Open Relevance Project · PyLucene · Solr · Tika Other projects Buildr · Chainsaw · HBase · Xerces · Batik · FOP · Log4j · XAP · River · ServiceMix · Log4Net · Abdera · Ivy · ODE · Wink Incubator Projects ACE · Aries · Bluesky · Composer · Empire-db · JSPWiki · Ki · Thrift · UIMA · XAP · Wink · libcloud Retired projects HiveMind · Slide · Shale License: Apache License · Website: http://apache.org/

This Web software related article is a stub. You can help Wikipedia by expanding it.

Retrieved from "http://en.wikipedia.org/wiki/Apache_Roller"

Categories: Apache Software Foundation | Open source content management systems | Blog software | Free software programmed in Java | Web software stubs

Hidden categories: Articles lacking reliable references from August 2008 | All articles lacking reliable references

via en.wikipedia.org

Cool! the Apache Roller Beginner's Guide shows up on Wikipedia!

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Creating Your First Virtual Machine: Ubuntu Linux (Part 2)

This is the second part of the article: http://www.packtpub.com/article/creating-first-virtual-machine-ubuntu-linux-part2

An excerpt from my new VirtualBox 3.1 Beginner’s Guide Book.

__________ Information from ESET Smart Security, version of virus signature database 4436 (20090918) __________

The message was checked by ESET Smart Security.

http://www.eset.com

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Creating Your First Virtual Machine: Ubuntu Linux (Part 1)

In this two-part article by Alfonso V. Romero, author of VirtualBox 3.1: Beginner's Guide, you shall:

• Create your first virtual machine in VirtualBox, using Ubuntu Linux
• Learn about your virtual machine's basic configuration
• Download and install Ubuntu Linux on your virtual machine
• Learn how to start and stop your virtual machine

Check out the full article at: http://www.packtpub.com/article/creating-first-virtual-machine-ubuntu-linux-part1

__________ Information from ESET Smart Security, version of virus signature database 4436 (20090918) __________

The message was checked by ESET Smart Security.

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Installing VirtualBox on Linux

This is an excerpt from my new VirtualBox book:

http://www.packtpub.com/article/installing-virtualbox-on-linux

In this article you’ll learn to install VirtualBox on Ubuntu Linux. If you have the time, check it out and let me know if it was helpful…

__________ Information from ESET Smart Security, version of virus signature database 4436 (20090918) __________

The message was checked by ESET Smart Security.

http://www.eset.com

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Build your own Application to access Twitter using Java and NetBeans

The third part of my article series about building a Twitter client is now published on Packt’s website:

http://www.packtpub.com/article/build-your-own-application-twitter-java-netbeans-3

In this article you’ll learn to:

• Add a Tabbed Pane component to your SwingAndTweet application, so you can show your own timeline on one tab and your friends’ timeline on another tab.
• Use a JScrollPane component to add vertical and horizontal scrollbars to your friends’ timeline list.
• Use the getFriendsTimeline() method from the Twitter4J API to get the 20 most recent tweets from your friends’ timeline.
• Apply font styles to your JLabel components via the Font class
• Add a black border to separate each individual tweet by using the BorderFactory and Color classes.
• Add the date and time of creation of each individual tweet by using the getCreatedAt() method from the twitter4j.Status interface, along with the Date class.

Check it out and let me know if you like it or not! You can leave your comments  in Packt’s website, too…

__________ Information from ESET Smart Security, version of virus signature database 4436 (20090918) __________

The message was checked by ESET Smart Security.

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Installing FrontPage 2002 Server Extensions for IIS 7 on Windows 7 Ultimate

Last Friday I had to configure a Windows 7 Ultimate machine for developing Web applications with Visual Web Developer 2008, SQL Server Express 2008 and IIS 7. I needed the FrontPage 2002 Server Extensions, and found a new version here: http://www.iis.net/downloads/default.aspx?tabid=34&g=6&i=1630

I installed them on a Windows 7 virtual machine created in VirtualBox, and they work perfectly!

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Audio problem in Windows 7 virtual machine with VirtualBox 3.1.2 corrected

I recently installed Windows 7 Ultimate edition on a virtual machine created with VirtualBox 3.1.2, and noticed it didn't recognize the audio driver. Then I googled for an answer to my problem, and found on the VirtualBox forum that I had to download the AC97 drivers from http://www.realtek.com.tw/ and install them on the Windows 7 virtual machine. I did that and the problem disappeared! Now I can hear sound on my Windows 7 VM!

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Swinging and Tweeting with Java and NetBeans: Part 2

In Swinging and Tweeting with Java and NetBeans: Part 1 of this article series, we saw a simple way to see your last tweet via a Java application called SwingAndTweet using the Twitter4J API.

In this article by Alfonso Romero, we will add some more functionality to our SwingAndTweet Java application.

Here, we will learn how to:

• Create a twitterLogin dialog to take care of the login process
• Add functionality to show your 20 most recent tweets right after logging in
• Add the functionality to update your Twitter status

In this tutorial, we'll develop the simple Java application further to add some more functions. Now that we can connect to our Twitter account via the Twitter4J API, it would be nice to use a login dialog instead of hard-coding our Twitter username and password in the Java application.

But before we start to build our enhanced SwingAndTweet application, let me show you how it will look like once we finish all the exercises in this part of the tutorial:

Click here to see the full article...

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VirtualBox Beginner's Guide Announced in Packt's Website

Wow! My second book is already announced in Packt's Website: http://www.packtpub.com/virtualbox-3-1-beginners-guide/book

Here's the cover:

I'd really appreciate it if you tell me what you think about the cover. We're still working on a couple of details on the book's chapters, but I'm definitely positive it will get published as soon as possible...

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Twitter Java APIs: JTwitter vs. Twitter4J

I recently stumbled upon a twitter API called JTwitter. It looks as interesting as the Twitter4J API, which I'm using to write a Twitter Java application for my boss. It should be interesting to have a list of all the available APIs for Twitter, and make some comparisons...

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Swinging and Tweeting with Java and NetBeans

Cool! The first article of my Swinging and Tweeting with Java and NetBeans series came out! Check it out at the Packt Publishing website: http://www.packtpub.com/article/swinging-tweeting-build-custom-application-twitter-java-netbeans

As always, I'm open to suggestions and improvements :)

Posted via email from alromero's posterous

Something messed up my classpath in Netbeans 6.8

I was working with a Twitter Java app in NetBeans, and suddenly I couldn't run my project from NetBeans 6.8. The strange thing was that I could compile it on NetBeans and then run the jar file on a terminal window!  After two stinking hours of struggling with my project configuration, I found out it was a problem with the classpath, thanks to the tips I found on http://en.allexperts.com/q/Java-1046/main-class.htm.

So, basically, if suddenly you cannot run projects on NetBeans, try fixing up your classpath, and maybe your problem will be solved.

On Windows, type

 set CLASSPATH=.;%CLASSPATH%

on a Command Prompt window.

On Linux, type

CLASSPATH=.:$CLASSPATH
export CLASSPATH

On a terminal window.

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Problem with Ubuntu 9.10 Karmic and 1024x768 screen resolution solved

Geez, I had a lot of trouble these last two days because I installed Ubuntu 9.10 Karmic and my PC was stuck at 800x600 resolution, even though I could get up to 1024x768 on Ubunu 9.04 Jaunty. After two days and several anxiety attacks, I finally discovered that it all was due to a loose connection between the graphics adapter and the monitor! How about that? I never had a problem like this before...

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Apache Roller 4.0 Beginner's Guide Published and Available Online

At last! The Apache Roller 4.0 Beginner's Guide is published and available online at Packt's web site! Click on the following image to see what this book covers:

Oh, and check out the sample chapter at http://www.packtpub.com/files/9508-Chapter-9-Advanced-Topics.pdf, where you'll learn how to:

• Learn to manage group blogs
• Use aggregators and blog search engines to expand your Roller blog's audience
• Configure Google webmaster tools for your Roller weblog
• Use podcasts in your weblog entries
• Use Google docs as a weblog client to publish entries in your Roller weblog
• Use Planet Roller to aggregate external blogs along with your Roller blogs

Posted via email from alromero's posterous

Ubuntu Server, VirtualBox and PAE extensions

A few minutes ago I had some trouble when creating a new virtual machine with Ubuntu 8.04 LTS edition through the VBoxManage interface. Thanks to the http://www.networkfoo.org/server-infrastructure/ubuntu-server-install-virtualbox-kernel-requires-following-features-not-presen post, I discovered I needed to activate the PAE extensions.

Posted via email from alromero's posterous