Java has faster developer speed since it’s much less complicated than Rust
[citation needed]
To give some context: Exception-based error handling is insanely complex. The error handling of Rust is much simpler to reason about. Finding out where errors happen is a lot simpler.
The only Java dev I know is an older guy who started university with me at the same time - I was 20, he was 45. He knew Java, I didn't. Java is not the future if you ask me.