Cargo Features

[dependencies]
jni-simple = { version = "0.3.2", default-features = false, features = ["std", "asserts", "dynlink", "loadjvm"] }
default = std

The std feature is set by default whenever jni-simple is added without default-features = false somewhere in the dependency tree.

std default asserts? loadjvm?
asserts = std
loadjvm = libloading, std

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

libloading loadjvm?

Enables libloading ^0.8.8