XPath Tutorials Examples for Beginners and Java Developers

XPath Tutorials for Beginners and Java Developers
This XPath Tutorial is collection of my Xpath Notes which I prepared recently when I was working on XML and XPATH. Though I was familiar with XML but not with Xpath and thought to note down bullet points about Xpath to get myself up and running. It’s not quite detailed but gives a nice overview on what is Xpath and how can you use Xpath in Java. I have not edited order of notes and presented it as it is in this XPath Tutorial. It also contains some example of xpath expression to give you an idea of how they look like but its analogous to SQL which is used to retrieve data from tables.

Result of Recent Google PageRank Update in November 2011

Just come to know about recent Google PR update which is due today 8th November 2011 and thought about this post to share result of recent Google Page Rank update based on my experience.

Everybody in web is talking about this Google PR update which is coming after recent Google Panda or Caffeine update, which has affected many sites ranking. I think Google PR update has been done or under work because I can see PR updates from zero to two on some of my articles. I can also see that this time Google is more restrict on awarding page rank and the one which got PR 3 on last Google PR update on Augst 2011 is getting PR 2 this time. Google has also adjusted PR of existing articles along with new articles.

List of Tibco RV, EMS Tutorials , Tips from Javarevisited

Hi guys , just thought about some more topics to explain on this tibco tutorial series , let me know out of below which Tibco topics you would like to me cover first , please suggest if you have other topics in mind. I am now updating this post as most of the topics are already covered but I forgot to update this post.

1. Difference between RVD and RVRD.

I have covered difference between routing daemon and Tibco daemon in this part. basically main difference between both of them is the purpose. RVD is mainly for sending and receiving message in same network between two Tibco RV publisher and subscriber while RVRD is used to bridge two different network from two different countries, cities or even continent. Most of the investment banks has RVRD bridging there London to New-york traffic or London to Tokyo traffic. Bandwidth of these WAN networks are very important because if  you have just one slow Tibco subscriber that can bring down whole network link between two regions. We had an incident when one of out application is publishing huge amount of updates in MB and on other side we had a GUI on a slow desktop which is keep asking for resend, this problem is often referred as Tibco RV storm and its very serious issue while working with Tibco messaging. One important thing to note here is reliability parameter of tibco rv which actually defines how long publisher should hold the message if set very low can cause frequent retransmission request.

Finally Eclipse supports JDK7 in Eclipse Indigo 3.7.1

Much awaited release of Eclipse with JDK7 is now over, Eclipse has announced release of version Indigo 3.7.1 which will support JDK7.though I already have downloaded Netbeans with JDK7 support I was eagerly waiting for my favorite java development IDE to comes with java7 support. I am expecting this to support all new java7 features including automatic resource management, string in the switch and multiple-cache block in exception handling. You can download the new Eclipse 3.7.1 version from here. You can also update your existing eclipse IDE with new feature from Menu-->Help-->Check for

Updates.

There is not much in this release except JDK7 feature, no new feature has been introduced which will probably be released in either 3.8 or 4.2. Java community is still embracing JDK7 but sooner or later it will adopt it and my feeling is that it will happen very soon because it contains the similar features which JDK 1.5 was contained though not that significant but still pretty useful for day 2 day work.

Enjoy

Further Learning
The Eclipse Guided Tour - Part 1 and 2
Java Fundamentals, Part 1 and 2
The Java Developer's Guide to Eclipse


Other Java Eclipse articles you may like to explore

• 30 Useful Eclipse Shortcuts for Java Developers (list)
• How to remote debug Java application in Eclipse? (tutorial)
• 10 Eclipse debugging tips Java developer should know? (see here)
• How to attach source code for JAR file in Eclipse? (guide)
• Eclipse shortcut to print System.out.println statements? (shortcut)
• How to increase console buffer size in Eclipse? (steps)
• How to use spaces instead of tabs in Eclipse? (guide)
• How to create an executable JAR file from Eclipse? (example)
• 3 Books to Learn Eclipse IDE for Java developers (list)
• How to Increase Heap Size of Java Program running in Eclipse? (guide)

Thanks for reading this article so far. If you like this article then please share with your friends and colleagues. If you have any questions or feedback then please drop a comment.

10 Famous Laws of Computer Programming and Software Enginnering World

Like any other field, Software and Programming world too has some interesting and famous rules, principles and laws, which programmers, developers, managers and architects use often in conversations, meetings and chats. These laws are either rules, principles, or famous words from great personalities of computer programming world. At the same time these laws are interesting, funny, worth knowing, and few of them are just amazing to read. I have sharing things which is worth knowing and useful for not only Java programmer but also developers from other programming language e.g. we have seen 10 Object oriented design principles, which is not only useful for Java guys but also with any OOPS programmer. In this article, I am going to share my collection of 10 famous software and computer programming laws, I am sure you would have few more to add into this list. Please share a computer programming rules, or a thought of wisdom, which is worth knowing among software professional.

TIBCO Ledger file in Certified messaging : TIBCO Tutorial

TIBCO Ledger files in certified messaging
This is in continuation to my previous article on TIBCO Certified messaging, in this TIBCO tutorial we will discuss about what is TIBCO ledger? What is process based ledger and what is file based ledger?  Which messages are stored in TIBCO ledger? What are advantage and disadvantage of using TIBCO ledger? When should we use Process based and File based ledger etc. if you would like to read my earlier TIBCO Tutorial please see.