JAAS authentication in Tomcat example

http://www.byteslounge.com/tutorials/jaas-authentication-in-tomcat-example

Apache Tomcat 7 (7.0.69) - Realm Configuration HOW-TO

https://tomcat.apache.org/tomcat-7.0-doc/realm-howto.html#JAASRealm

http://www.cofares.net

These Are the Cities Where Tech Workers Live Largest

USA Today (04/07/16) John Shinal

Annual data released by the U.S. Bureau of Labor Statistics demonstrates the value of an education in the science, technology, engineering, or math fields. Workers employed in computer and math occupations in the cities with the most technology employees earned yearly salaries about 50 percent to 75 percent higher than the overall workforce. Seattle tech workers, for example, had a mean salary of $108,350, or 78 percent more than the $61,000 earned by all workers there. That was the highest tech-worker premium in the 10 largest hubs, followed by Dallas-Fort Worth, Houston, and Austin. The same is true in the burgeoning tech hub of Oakland, CA, where workers in computer and math occupations were paid 70 percent more. Computer and math occupations in Los Angeles, Philadelphia, San Jose, and San Francisco all earn more than 60 percent more than their non-tech counterparts. Although Washington, D.C., is among the largest tech-employing regions, its tech workers had the smallest salary differential, at 54 percent, likely due to the large numbers of federal government workers. Among tech occupations, software developers and systems analysts were the highest in number in nearly all of the largest tech hubs, surpassing computer programmers, network and database administrators, computer research scientists, and computer-support specialists.
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The Java™ Tutorials : Aggregate Operations

The Java Tutorials are practical guides for programmers who want to use the Java programming language to create applications. They include hundreds of complete, working examples, and dozens of lessons. Groups of related lessons are organized into "trails". (The full tutorials https://docs.oracle.com/javase/tutorial/)

Let us stress this week on

Aggregate Operations:

Prerequisite:  Lambda Expressions and Method References.

Then follow the Aggregate Operations tutorial

10 Online Big Data Courses

Here is a list of some free MOOC about massive data

http://dataconomy.com/10-online-big-data-courses/

Lambda Expressions (The Java™ Tutorials > Learning the Java Language > Classes and Objects)

Lambda expression Java 8 un tutoriel introductif :

https://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html