Single File Systems 

Users could make their own revisions of a document, commit changes, and merge them together. However, these systems (e.g. TCS) operates only on single files. It has no way of working with an entire project, so it does not support atomic commits affecting multiple files. 

Examples include SCCS, RCS etc.

Groovy is designed as a companion to Java and not as a replacement language for Java. Groovy interoperates with other Java code and libraries smoothly. Everything you can do with Groovy can be done using Java, but Groovy help us reduce the amount of code written to a great extend.

Apache Groovy is an optionally typed and dynamic object-oriented programming language written for the Java platform, with features similar to those of Python, Ruby, Perl etc. Other JVM Based languages include Scala, Groovy, Klotin, Clojure, JRuby, Jython.

Maven is primarily a build automation tool used for building mostly Java projects and is maintained by the Apache Software Foundation. Maven, a Yiddish word meaning accumulator of knowledge, was originally started in Jakarta Turbine project.

Maven’s objectives (as per maven.apache.org) are:

1. Making the build process easy

2. Providing a uniform build system

3. Providing quality project information

Will list our common issues, tips and tricks for unit testing concurrency code written in Spring. You will usually be using a unit testing framework such as JUnit or TestNG.