What is: Java

What is the JRE? Introduction to the Java Runtime Environment

The JRE creates the JVM and ensures dependencies are available to your Java programs. It plays a vital role in devops and cloud configurations.

What is the JVM? Introducing the Java virtual machine

The Java virtual machine manages application memory and provides a portable execution environment for Java-based applications. Developers reap the rewards in performance, stability, and predictable runtimes.

What is the JDK? Introduction to the Java Development Kit

The JDK is the development platform for building Java applications. Learn about different JDK versions, then install a JDK in your development environment and use it to compile a Java program.

What is JSP? Introduction to Jakarta Server Pages

One of the original Java web technologies, JSP is still widely used with servlets and JSTL. Here's how to use Jakarta Server Pages to build dynamic web pages that connect to the Java back end.

What is Tomcat? The original Java servlet container

Everything you need to know about Tomcat: The high-availability Java and Jakarta EE application server for servlets, JSP, and WebSockets.

What is JPA? Introduction to Java persistence

Get to know the Java persistence standard based on Hibernate and learn how to use JPA to store and manage Java objects in a relational or NoSQL database.

What is JDBC? Introduction to Java Database Connectivity

Get an overview of JDBC's architecture, then learn how to connect to a database and handle SQL queries and responses with PreparedStatements, transactions, connection pooling, and more.

What is OSGi? A different approach to Java modularity

The OSGi approach to developing and deploying modular software in Java offers an interesting alternative to standard runtimes and frameworks, especially for mobile and IoT applications

What is JPMS? Introducing the Java Platform Module System

The module system introduced in Java 9 makes it easier to organize your code. Here’s a brief guide to working with modules in Java

What is service-oriented architecture?

Get an overview of service-oriented architecture implemented using SOAP-based web services

What is Apache Maven? Build and dependency management for Java

Maven provides consistent project structures, declarative configuration, and a wide range of plugins, along with a centralized repository for storing and downloading third-party software.