Double::class

will yield a

KClass<Double>

.javaClass

should be used when you need the Java

Class<T>

of an instantiated object

Double::class.java

should be used when you need a reference to the

Class<T>

by way of knowing the name of the class

I don’t believe there is any one particular docs page that explains the differences unfortunately, this is just what I’ve learned by idling in Slack and checking out 😒tackoverflow: questions