> -Linq is nice but has a huge caveat: if a Linq provider does not implement it fully to falls back to the .NET collections. So trying to 'Skip' and 'Take' on a ActiveDirectory will fall back to collections in memory and cause a crash on a huge AD in production (Yes had the pleasure).

How do you expect this to work then? If the provider is bad, blaming LINQ for it makes no sense...

You either have a high level of abstraction and possible performance pitfalls - or a low level of abstraction, and also performance pitfalls since the code is less modular, more coupled and harder to read.

LINQ can in many cases improve performance significantly in large applications when used properly, since it avoids N+1 query problems due to implementation hiding/modularity, and allows composing parts of queries across different vertical subsystems of the application (vs. each subsystem doing its own query and then joining them with more boilerplate).

Nothing in Java compares to this. jOOQ and Hibernate (and the rest in the ORM ecosystem) are pale shadows, exactly due to lacking language features (such as reified expression trees), and even then, they only work with databases.

> .NET is about extending an existing application (Servlet API vs IIS)

I don't think this is true anymore since ASP.NET Core. While you can still run under IIS but it's a more typical reverse proxy setup instead of running inside IIS.

> You can't wrap streams in .NET

You've always been able to wrap streams in .NET so I'm not sure what you mean by this

First, huge open source ecosystem and culture. Mature open source projects, culture of writing blogs and tutorials (that one will die due to changes in search engines, but it was super nice while it lasted).

Second, working in C# felt clunky, as if every other thing was done to check the checkbox "done" and the author called it the day once it sorta kinda worked. There was some additional syntactic sugar in that language that was nice, but it did not made that much difference in practice and I don't miss it after coming back to java.

Third, I found the obsession with bashing java by people who have no idea how java projects look like and which problems they have annoying.