1/ Proposed for Java 17: JEP 406: Pattern Matching for switch (Preview). What can we do with these? Read on! openjdk.java.net/jeps/406

May 23, 2021 · 12:31 PM UTC

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2/ With pattern matching for switch, we can write code like this, where we test for a type on the left and use it directly on the right without having to cast it ourselves.
Image from Triangle Java (@TriangleJava)
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3/ JEP 406 also introduces "guard patterns", kind of like adding an if statement to your switches. This should simplify a lot of switch logic! In this case, Large and Small triangles are defined on the left side of the switch, rather than in an if-statement on the right side.
Image from Triangle Java (@TriangleJava)
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