Java

What is Java?

Java is one of the most widely used programming languages in the world, designed for portability, reliability and scalability. "Write once, run anywhere" — Java code runs on any machine with a JVM. From banks and governments to Android apps and big data — Java is everywhere.

Why Java is useful

Java is the standard for enterprise and large-scale systems:

• Platform-independent: Runs on any operating system via the JVM
• Enterprise standard: The language of banks, insurers and governments worldwide
• Strong typing: Compile-time checks catch errors before runtime
• JVM ecosystem: Kotlin, Scala and Groovy also run on the JVM

Time savings with Java

Java's vast ecosystem (Spring Boot, Maven, Gradle) and the maturity of its tooling make building production applications predictable and reliable.

Hidden features that often go unused

Java evolves rapidly — a new release every 6 months with modern features:

• Records: Compact classes for immutable data — less boilerplate.
• Sealed Classes: Restrict which classes can inherit for safer type hierarchies.
• Pattern Matching: Modern switch expressions with type matching and guards.
• GraalVM: Compile Java to native binaries for instant startup.
• Structured Concurrency: Structured parallel tasks with automatic cleanup.
• String Templates: Safe string interpolation with template processors.

Integrations with other tools

Java integrates with many other tools and services:

• Spring Boot: The most widely used Java framework for microservices.
• Kubernetes: Java applications in containers with Quarkus or Spring Boot.
• PostgreSQL & MongoDB: JPA/Hibernate and Spring Data for all databases.