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Kotlin for Android App Development: app types and Kotlin

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Android Java
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I know almost nothing about Kotlin, but have made many Android apps in Java for a long time. Are there aspects of Kotlin that are very different from Java for Android? Are there any types of Android apps (other than games) that should not be attempted in Kotlin? Thank you.
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Hi Dave,

Kotlin is heavily inspired by Java but it has several powerful language features that don't exist in Java, such as:
  • Data classes & sealed classes
  • Null safety(!) -- this is an extremely interesting aspect of Kotlin's type system, I recommend to take a look at it to see why NullPointerExceptions don't have to occur so often
  • Coroutines(!) -- these are very interesting for Android dev as well, no need for AsyncTask or the like
  • More convenient syntax for functional programming
  • Even more convenient Collections API
  • Infix functions & shorthand function notation
  • ...and many more

  • This doesn't even scratch the surface yet but if you want, check out the official Kotlin docs (they're really well written!) or download the two sample chapters from my book from the companion website.

    Also, let me know if you want to know about any feature in particular. Thanks!

    - Peter
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