ServerSocket is a java.net class that provides a system-independent implementation of the server side of a client/server socket connection.

Bean Validation, previously commonly called just "JSR-303", is an annotation based validation framework for javabean properties and parameters of arbitrary methods. Hibernate Validator is the reference implementation and the most widely used one.

An cryptographic scheme which uses two mathematically related keys; a public and a private key where a message encrypted with public key can only be decrypted with the private key and vice-versa.

Packaging is a configuration management process involved with capturing the knowledge needed to install or uninstall software on a target system.

`spring-test` is the testing module of the Spring Framework, providing support for unit and integration testing with JUnit and TestNG, including various mocks for unit testing and the Spring TestContext Framework & the Spring MVC Test Framework for integration testing Spring-based applications.

Unmarshalling is the process of transforming the storage or transmission representation of an object back into its original memory representation. It is the inverse of marshalling.

A module is a file containing Python definitions and statements.

Command-Query Responsibility Segregation (CQRS) is an architectural pattern which separates commands (that change the data) from queries (that read the data). See 'about cqrs tag' for more details and references to learning materials. Not to be confused with Command-Query Segregation ([CQS]), a principle of object method design which CQRS incorporates.

Querydsl is a framework which enables the construction of type-safe SQL-like queries for multiple backends including JPA, MongoDB and SQL in Java.

A collection of APIs used for developing new voice-enabled capabilities for Alexa and used in the Amazon Echo and other third party devices.

For questions relating to the Raku programming language (formerly known as Perl 6).