New candidate JEP: 433: Pattern Matching for switch (Fourth Preview)

[Mark Reinhold]

// Corrected

https://openjdk.org/jeps/433

  Summary: Enhance the Java programming language with pattern matching
  for switch expressions and statements. Extending pattern matching to
  switch allows an expression to be tested against a number of patterns,
  each with a specific action, so that complex data-oriented queries can
  be expressed concisely and safely. This is a preview language feature.

- Mark