java.lang.AbstractMethodError:...
If you are facing this issue than most probably have a wrong version of XercesImpl.jar fileI had a 2.0.2 version, which causing conflict.Replacing it with 2.8.1 resolved the issue.
View Article301 Moved Permanently, URLConnection and HTTPURLConnection
If a website has applied a redirection from "BaseUrl" to "BaseUrl/" then what you see the response by hitting "" in your browser "301 Moved Permanently" and redirected to "/"How to deal this situation...
View Articlejava.lang.nosuchmethoderror org.objectweb.asm.classwriter
I was working on a RESTFul Service based project. Recently I migrated the plain JDBC DAO layer to the hibernate based orm layer. As a first step I migrated one of the DAO class. When I deployed the...
View Articleorg.hibernate.HibernateException: Unable to instantiate default tuplizer...
This Exception during the maven build in an hibernate based project could come due to various reasons.Primarily one should look into the complete stack trace. The further exception usually do give clue...
View ArticleContext initialization failed - java.lang.NoClassDefFoundError:...
I received the following error while running a Spring and Hibernate applicationContext initialization failedorg.springframework.beans.factory.BeanCreationException: Error creating bean with name...
View ArticleHibernate: a different object with the same identifier value was already...
People working with Hibernate might be familiar with the below error.org.springframework.orm.hibernate3.HibernateSystemException:a different object with the same identifier value was alreadyassociated...
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Hibernate + Spring + MySql: Cannot convert value '0000-00-00 00:00:00' from...
When I was trying to load an Hibernate object, I received the following error:nested exception is java.sql.SQLException: Cannot convert value '0000-00-00' from column 4 to TIMESTAMP. at...
View ArticleWhat is Web 2.0?
I know the article is too late. We are done with all type of definitions and I am now talking about it.I planned to write a five second explanation is because I keep bumping into this question and...
View ArticleUnable to load default SVN client
While installing the subversion plugin Subclipse in the Eclipse IDE I came across a problem. Subclipse uses "JavaHL (JNI)" to interface with subversion by default.Initially I was getting the following...
View ArticleCloud Elasticity or Scalability, Whats the Difference?
I have heard and read at lot of places about Elasticity and Scalability of the cloud. In a discussion the point came across that what actually is the difference between Elasticity and the Scalability,...
View ArticleApplication logging through SLF4J : Quick Reference
The detailed information on SLF4J is available on http://www.slf4j.org. The primary reason of writing the blog is that there is lot of information but usually people do not have the time to do into the...
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REST Design Pattern and Best Practices
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} There is lot of material available on net about the REST...
View ArticlePaaS : Cloud Application Platforms
Cloud is having a thunderstorm these days. All the buzzbowrds related to cloud are raining everywhere and Cloud in itself is sweeping IT in all facets. I have no intentions of creating further...
View ArticleOpenstack Keystone : No handlers could be found for logger...
When I hit the the commandKeystone user-listI get the following errorNo handlers could be found for logger "keystoneclient.client"Invalid OpenStack Identity credentials. If you run the command in debug...
View ArticleOpenstack Keystone : 'Client' object has no attribute 'service_catalog'
When I try the following command on my setupkeystone catalogorkeystone token-getI get the following error'Client' object has no attribute 'service_catalog'When I run in debug mode I can see that the...
View ArticleA required class was missing while executing...
When I was running the commandmvn jetty:runI got the message[ERROR] Failed to execute goal org.mortbay.jetty:jetty-maven-plugin:8.1.1.v20120215:run (default-cli) on project CabShareService: Execution...
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Cloud Enabled Scalability – My Story
Something prompted me to blog again after a long time and not sure if I would be motivated to continue. First, I thought to share a long pending experience, which I had the opportunity to have eight...
View ArticleBeanDefinitionStoreException: Failed to parse configuration class: Could not...
If you are creating a Spring Boot application and see the following error stack . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | ||...
View ArticleHow to terminate application running in background
At times an application do not stop properly and keep running in background, occupying port.Step 1: Identify the TCP process id binding to a specific port$>netstat -ano | find "8080" TCP...
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Beyond JSON - Flashback
A Short StoryIn the world where even services are becoming micro, I thought of writing a micro story. I cannot cover it in one blog so dividing it in multiple bogs as below;1. Flashback2. Emergence3....
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Beyond JSON - The Emergence
Previous - Beyond JSON - FlashbackIn late nineties, there was a greater push to keep finding the technology for the distributed systems. The biggest challenge was the data exchange between the...
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Beyond JSON – The Dominance
Previous - Beyond JSON - The EmergenceBy 2010, there were many JSON parsing libraries available and JSON kept gaining the popularity amongst data exchange formats. As the below graph clearly shows...
View ArticleBeyond JSON – Alternates
Previous - Beyond JSON – The DominanceWhen you want to write data to a file or send it over the network, you have to encode it as some kind of self-contained sequence of bytes (for example, a JSON...
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My first IOT Raspberry PI Experiment
I am going to describe my amazing introduction of Raspberry Pi. I was introduced to the this amazing device a couple of weeks back as part of my training and I immediately decided to procure one and...
View ArticleName server record (NS) not showing in NSLOOKUP - Godaddy + AWS
I registered a new domain in GoDaddy and my application is hosted in AWS. To enable the routing one of the steps is to create a hosted zone in AWS. Once that is created, you will receive a list of name...
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