The Daily Programming

After long time later, I am writing my programming blog again. Today, I downloaded glassfish-3.1.2.2-unix.sh. I am running Fedora 16. After successful installation of the glassfish, I was getting error when I ran the the following command: asadmin>start-domain "There is a process already using the admin port 4848 -- it probably is another instance of a GlassFish server. Command start-domain failed." Then I checked my hostname of the machine: hostname I got my hostname is nix-domain Now, nix-domain is not listed in the /etc/hosts file. Therefore, I added nix-domain in the file. 127.0.0.1               localhost nix-domain Now, I tried to run the start-domain again. It started perfectly without any error. Therefore, I understood that my machine assigned hostname 'nix-domain' is not listed in the hosts file, glassfish generated the error. I am hoping, it is not only the solution, there must be...

Bookmarks - Bookmarks with Tags: jersey within http://www.ibm.com/developerworks/web

One of the most popular component based Java Web Frameworks is Wicket. Here is some cool links about the Wicket: 1)  http://www.viddler.com/explore/oredev/videos/61/ 2)  http://www.javalobby.org/java/forums/t105230.html 3)  http://www.ibm.com/developerworks/web/library/wa-aj-wicket/ 4)  http://wicket.apache.org/

Here is the interesting trends of three Java Frameworks (Wicket vs JSF vs Stripes vs Spring MVC) against the job market (USA): jsf, wicket, stripes, spring MVC Job Trends Jsf jobs - Wicket jobs - Stripes jobs - Spring Mvc jobs

T o write clean code is an art rather than science. From my experience at university, I did not get any course where I can learn to write clean code. Why do I bother clean code? Is it really important than solve a problem? No, it is not important than the solution of a problem but it will be pain in the future to maintain the code. For this reason, I have to write clean code to improve the quality and maintainability of the software. Here, I have presented a cheat sheet to create clean function or method: Function should do only one thing or logic [1]. Function should be small not more than 30 lines [2] Function name should be descriptive rather than short name [3] The ideal number of function arguments [4]: Zero or no argument is the best policy One argument is the better policy Two arguments are the good policy Three arguments are the worse policy More than three arguments are not acceptable. The function should be converted to a s...

Today, I will discuss about InfoWindow of the Google MAP API V3.  At first I will show how to attach InfoWindow with each marker. As a result, when you will click a marker   figure 1                                   an InfoWindow will be displayed. Then click another marker a new InfoWindow will be displayed without closing the previous InfoWindow, see figure 1. It is a default behavior of the Google Map API V3. To do this, follow the following steps: Step 1 : Create Google MAP API V3 map object:      var latlng = new google.maps.LatLng(23.922499,91.164062);      var myOptions = {            zoom:6,            center: latlng,            mapTypeId: google.maps.MapTypeId.ROADMAP,       };...

It is an old post based on old idea, it is not relevant anymore.   It was in 2009, I just wrote a multi-threaded code to fetch data from two DB2 servers. They are both physically separated. My intension was to get multiple data simultaneously, so JavaBeans will work quickly. I uploaded my multi-threaded J2EE application in the production server, after one or two months later the whole production server was terribly slowed down. I thought there is memory leak problem inside the server. However, I also checked which application is taking two much CPU and memory. I found that my implemented multi-threaded application consuming vast amount of computing resources. I was surprised and I researched on the multi-threading in J2EE. I found from several tech-forums that multi-threading inside J2EE server is forbidden technique. Hmmmm, WHY?   To understand why J2EE does not support multi-threading [7], we need to understand fundamental theory of J2EE server at first. J2EE server is not...