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Editorial Team
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Asked: 2026-05-27T14:11:39+00:00

Pascal has a feature of set types. It allows nice constructs like this: if

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Pascal has a feature of set types. It allows nice constructs like this:

if i in [5..10] then
  ...

Are there any similar things in Java?

I came up only with this ugly construction that doesn’t accept intervals:

if ((new HashSet<Integer>(Arrays.asList(new Integer[]{5,6,7,8,9,10}))).contains(i))
  ...
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1 Answer

  1. Editorial Team

    Yes you’re right. You need an implementation of a Set in Java and have to populate it yourself with a loop if you want a non-sequential list of numbers.

    Also, Java does not support the contruct of a Range. Other JVM laguages like Groovy and Scala however do.

    This post may add some more colour

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