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Switch

layout: default title: switch and Data Type

Below is the list of primitives we can use in a switch statement.

  • byte
  • char
  • short
  • int

This means we cannot use these types:

  • long
  • float
  • double
  • boolean

Practice Exercise

How can you remember what can't be used? * Floating-point numbers can be imprecise, so they don't make good cases. * If boolean could be used, what would the default: case be? * long - just commit that one to (your) memory. It was a design decision by the creators of Java. Also imagine a switch with 18 quintillion possible cases.

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