Events and EventEmitter in Node.js
What Are Events in Node.js? Node.js is designed around an event-driven architecture. This means that instead of waiting for tasks like file operations or HTTP requests to finish, Node.js uses events to signal when these tasks are complete. To manage
Accessing webserver over LAN (Linux+windows)
On one machine having SuSE 10.2 OS, I am running Jboss app server 4.2. By default it runs http server on port 8080. I was able to access it from browser using http://127.0.0.1:8080 URL. But I was not able to
Database Surrogate PKs – Few points
I am sure this is obvious stuff but anybody can overlook it, so I thought of adding it in my blog. Many programmers and database designers are using surrogate keys instead of natural keys as PKs (primary keys) now a
Making JRE work in Firefox – Suse 10.2 – 64 bit
Like a lot of other people, I faced problems in enabling Java in Firefox on Suse 64 bit OS. But it is working now so I thought of writing the obstacles and how to get rid of them. Basically it
OOAD Introduction
OOAD (Object oriented analysis & design) Scope: As most of you already know, OOA (Object-oriented analysis) and OOD (Object-oriented design) are put together and called as OOAD. To keep the discussion short I won’t be writing anything on the history
Enabling JDK 1.5 support in JSPs on Jboss
Applicable to JBoss 4.0.4 GA: Suppose you are using jdk 1.5 features in JSPs but they fail with following exception jboss jsp Syntax error, parameterized types are only available if source level is 5.0 that means you need to enable
Evince – PDF file print problems on SuSE
Evince is default document viewer for PDF files on SuSE 10.2. I tried to print pdf files opened in Evince but could not get them to print. Sometimes no error is reported (not even in CUPS error log) but document
Eclipse 3.3.1 – Server did not start after 50s
If you face this error – fix is to change “server timeout delay” under Window > Preferences > Server to higher value. From ‘normal’ I changed that to ‘long’. Server started up in 55s, but still I received similar error
install CUPS-PDF on SuSE 64-bit
What is CUPS-PDF CUPS-PDF acts as a virtual printer but instead of printing hard copies of your files, it prints PDF files as output. It appears as a printer under printer list on your machine, and if you select that
JBoss 5 Profile Creation Problem – Eclipse
If you face problem “mail.jar not found” on configuring JBoss 5 profile in Eclipse then the reason is JBoss 5 moved server/default/lib*.jar to server/common/lib folder. Fix for this problem is to change jboss5.serverdef under eclipse (${ECLIPSE_HOME}/plugins/org.eclipse.jst.server.generic.jboss_1.5.105.v200709061325/servers on my machine). Replace