Learn JAVA with Real Code Examples
Updated Nov 17, 2025
Performance Notes
Enable JVM optimizations
Use modern garbage collectors (G1/ZGC)
Use thread pools instead of raw threads
Leverage JIT optimizations
Security Notes
Use input validation
Follow Spring Security best practices
Avoid unsafe reflection
Use HTTPS and JWT for APIs
Monitoring Analytics
Spring Actuator
Prometheus + Grafana
ELK logging stack
New Relic / Datadog
Code Quality
Use SonarQube
Follow Clean Code practices
Use static analysis tools
Write JUnit tests