I made this argument before, but was informed that they have support for contextually distinguishing between names and keywords some time between Java 8 and 10.

I made this argument before, but was informed that they have support for contextually distinguishing between names and keywords some time between Java 8 and 10. So while e.g. the introduction of enum did cause all these issues for variables named enum, "var" did not and a hypothetical "closed" would not.