1. Strict Typing
In Java, this would result in a compile-time error:
2. Less Runtime Errors
3. Better Performance
4. Fewer Security Vulnerabilities
The stricter typing of Java, combined with the built-in security features of the JVM, make Java code overall more secure. Security patches and updates also tend to stabilize faster in Java, reducing the window of risk.
5. More Mature Tooling
The Java ecosystem has been around for over 20 years. As a result, there are many mature and robust open-source and commercial tools available to aid the development, testing, monitoring, and debugging of Java applications.
Additionally, the JVM provides a wealth of system monitoring, health-checking, and troubleshooting capabilities out of the box. This makes it easier to identify and resolve production issues when they occur.
6. Battle Tested Stability
Since its inception in 1995, Java has been used to power some of the largest and most critical systems in the world. This real-world testing and maturity mean the language, virtual machine, and ecosystem as a whole are extremely stable in production.
In short, Java has been "battle-tested" far more extensively and has proven itself as a rock-solid platform for robust, mission-critical production systems.
7. Easier Scaling and Deployment
Due to its compiled and optimized nature, scaling Java applications both vertically (more CPU/RAM) and horizontally (more servers) tends to be smoother and requires less tuning. The performance optimizations of the JVM also mean Java applications can achieve more throughput on a single server.
Deploying and updating Java applications is also easier due to the standardized JAR and WAR file formats. Changes can be deployed to multiple servers quickly and reliably.