Oracle JDK vs OpenJDK
Introduction
Java Development Kit (JDK) is essential for developing and running Java applications. There are two main distributions:
- Oracle JDK - Provided by Oracle, with commercial and open-source versions.
- OpenJDK - Open-source implementation of the Java Platform, Standard Edition.
Key Differences
| Feature | Oracle JDK | OpenJDK |
|---|---|---|
| License | Requires a commercial license for production use (from Java 11 onwards) | Open-source under GPL v2 with Classpath Exception |
| Support | Long-term support (LTS) versions with extended updates | Community-driven support with LTS from vendors |
| Performance | Often optimized with proprietary improvements | Similar performance but depends on vendor builds |
| Updates & Patches | Security updates for LTS versions require a subscription | Security updates provided by the community and vendors |
| Builds | Official Oracle builds | Built by various vendors like Red Hat, AdoptOpenJDK, Amazon Corretto |
Which One to Choose?
- Choose Oracle JDK if you need Oracle’s commercial support, long-term updates, and performance optimizations.
- Choose OpenJDK if you prefer an open-source, free-to-use option with community support.
Installing OpenJDK
On Ubuntu/Debian
sudo apt update && sudo apt install openjdk-11-jdk
On CentOS/RHEL
sudo yum install java-11-openjdk-devel
Installing Oracle JDK
- Download from Oracle’s official website.
- Follow the installation steps based on your OS.
Checking Installed JDK Version
java -version
Conclusion
Both Oracle JDK and OpenJDK are viable choices. The decision depends on licensing, support needs, and vendor preferences. OpenJDK is generally recommended for open-source and enterprise projects looking for free alternatives.
Written by A.M. Rinas