Java is a high-performance, object-oriented programming language and runtime (JVM) used to build portable, secure, and scalable applications across cloud, desktop, server, and mobile environments. Java's write-once-run-anywhere philosophy is enabled by the Java Virtual Machine (JVM), which executes bytecode produced by the Java compiler.

Features of Java:

Platform independence via the Java Virtual Machine (JVM) — run the same bytecode on Windows, Linux, and macOS.
High-performance runtime with JIT (Just-In-Time) compilation and advanced garbage collectors.
Strong type system and robust standard library for networking, concurrency, I/O, and security.
Enterprise-ready: long-term support (LTS) releases, mature tooling, and proven reliability for mission-critical systems.
Rich ecosystem: frameworks (Spring, Quarkus, Micronaut), build tools (Maven, Gradle), and thousands of libraries.
Broad platform support: server-side, cloud-native, containerized environments (Docker/Kubernetes), and Android.
Flexible distribution options: OpenJDK builds (Temurin/Adoptium, Azul, Amazon Corretto), Oracle JDK, and vendor-optimized binaries.

Java Usage Instructions:

$ sudo su
$ java --version

The command above prints the installed Java runtime version. Use this to verify that Java is properly installed and available in your system environment.

Disclaimer: Java is an open platform governed by multiple vendors and community projects. This document and any distributed software are not affiliated with or endorsed by any specific vendor unless explicitly stated. Always review vendor licensing and support terms (Oracle vs OpenJDK builds) and follow your organization’s security and compliance policies before deploying Java in production.

Java

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