Businesses often deal with old databases, message queues, SOAP services, legacy systems. Java has a truckload of well-established connectors (Even more than Python!), well-supported JDBC drivers, and vendor-supported SDKs.
Also features like transaction management, dependency injection, validation frameworks, AOP-style cross-cutting concerns are better addressed in Java.
Java has collection streams with great customizability (filter/map/reduce/etc). Far better writing your 10,000th for-loop in Go. You can also get automatic parallel streams without writing any extra code.
Go's profiling tools (esp memory) are very primitive, sorry. JVM profiling tools beat Go's by orders of magnitude. So does the other tooling - GC tuning, monitoring, etc. Java flight recorder and VisualVM are gorgeous.
That said, Go is still better at memory efficient, tight network software like lean k8s controllers. Though frankly, Rust is encroaching into this space.
Also features like transaction management, dependency injection, validation frameworks, AOP-style cross-cutting concerns are better addressed in Java.
Java has collection streams with great customizability (filter/map/reduce/etc). Far better writing your 10,000th for-loop in Go. You can also get automatic parallel streams without writing any extra code.
Go's profiling tools (esp memory) are very primitive, sorry. JVM profiling tools beat Go's by orders of magnitude. So does the other tooling - GC tuning, monitoring, etc. Java flight recorder and VisualVM are gorgeous.
That said, Go is still better at memory efficient, tight network software like lean k8s controllers. Though frankly, Rust is encroaching into this space.