Nick Samoylov graduated as an engineer-physicist from Moscow Institute of Physics and Technology, has worked as a theoretical physicist, and learned how to program as a tool for testing his mathematical models using FORTRAN and C++. After the demise of the USSR, Nick created and successfully ran a software company, but was forced to close it under pressure from governmental and criminal rackets. In 1999, with his wife Luda and two daughters, he emigrated to the USA and has been living in Colorado since then, working as a Java programmer. In his free time, Nick likes to read (mostly non-fiction), write (fiction novels and blogs), and hike the Rocky Mountains. Mohamed Sanaulla is a full-stack developer with more than 8 years, experience in developing enterprise applications and Java-based backend solutions for e-commerce applications. His interests include enterprise software development, refactoring and redesigning applications, designing and implementing RESTful web services, troubleshooting Java applications for performance issues, and TDD. He has strong expertise in Java-based application development, ADF (a JSF-based Java EE web framework), SQL, PL/SQL, JUnit, designing RESTful services, Spring, Spring Boot, Struts, Elasticsearch, and MongoDB. He is also a Sun Certified Java Programmer for the Java 6 platform. He is a moderator for JavaRanch and likes to share his findings on his blog.