Allow a newer Java language level

JoyOfCodingPDX / JoyOfCoding

Source code for The Joy of Coding course at Portland State University taught by David Whitlock

http://web.cecs.pdx.edu/~whitlock/

Apache License 2.0

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Open DavidWhitlock opened 3 months ago

DavidWhitlock commented 3 months ago

We're still requiring Java 11 language syntax:

Let's use a newer language level