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: Open a command prompt and type java -version . It should display your installed version. Writing Your First Program Create a file named Hello.java with this content:
This shift was designed to bring new features to developers faster. Instead of waiting five years for a massive update, developers now get incremental improvements (like local variable type inference, records, and pattern matching) regularly. Java JDK
: Visit Oracle's Java Downloads and select the latest Long-Term Support (LTS) version (e.g., JDK 21). Set Environment Variables : : Open a command prompt and type java -version
| For... | Best JDK | Reason | | :--- | :--- | :--- | | | Eclipse Adoptium (Temurin) | Free, open-source, certified, no licensing drama. | | AWS Cloud | Amazon Corretto | Free, long-term patches, optimized for AWS. | | Containers (Docker) | Eclipse Temurin (Slim) | Small image size (~200MB). | | Alpine Linux | Microsoft OpenJDK | Includes musl libc support. | Instead of waiting five years for a massive