Tech Notes

Understanding Java 8 Lambda final finally variable

2016/06/16

I am a little late to the java 8 party and was trying to quickly get some hands on with lambdas and ran into an issue where I got the error message Variables used in lambda should be final or effecti...

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How to set up Apache Storm on mac using brew

2015/12/26

I am learning about Apache Storm and the guide had long and winding instructions on how to install Apache Storm. I installed the single node using brew and it was a breeze. I did not had to spend time...

Waffle : Windows Single Sign On

2015/09/27

Last week, I was working on an application where I had to do LDAP authentication. My cmpany has been using a very old jar file that had the required code for authenticating and authorizing users. Ther...

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4 ways to set up datasources in Jboss AS 7

2015/07/22

Last year my company decided to move from JBoss 4.x/5.x to Jboss AS 7. We use Maven and IZPack plugin to create automated deployment to Jboss 4. As a part of IZPack plugin, we would write the install....

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Install Or Manage multiple versions of Java on OS X

2015/03/30

A few weeks ago my Mac hard drive crashed and I had to get a new grad drive. As part of upgrade, I had to wipe my drive clean and install Yosemite. What I did not realize was that Apple had goofed up ...

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Restful Webservice in 7 Steps using Spring boot

2015/01/26

Last week I was working on a new application which required me to build a web service to access it’s functionality. I decided to check out Spring 4 RestController. I was amazed at how far we hav...

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A quick tutorial on SAAJ API

2014/10/17

We ran into an issue last week. I had to call a third party web service that was built in PHP. Anyone who wokrs with Java will tell you that calling a web service is not more 15 minutes coding. You ta...

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Read / Write Excel file in Java using Apache POI

2014/04/18

About a year or two ago I was working with finance team where they wanted to pull the credit card transactions for all the customer using various combinations. Ex – – Get the credit card t...

13 Most Common Java Keytool Keystore Commands

2014/03/16

I was working on a project last month where I had to call a third-party web service. The third-party web service wanted me to add a SSL keystore and I struggled. I could have gone to my UNIX Admin and...