CODEWITHSUNDEEP
exceptionkotlin
donfuxx
donfuxx

Reputation: 11323

Shortest possible code to produce an Exception in Kotlin?

This is sort of a fun question, but what is the shortest possible Exception producing code in Kotlin? Any Exception.

Something like:

throw null!!

which will throw an NPE.

...but hey that is still quite a long line with 12 chars. It is actually quite usefull for testing things like logging of Exceptions in analytics and such.

Upvotes: 0

Views: 125

Answers (4)

BakaWaii
BakaWaii

Reputation: 6992

In terms of the number of character, you can easily declare a property which has a getter function throwing Exception:

val T: Nothing
    get() = throw Exception("For testing purpose!!")

Reminder: The usages of this code should probably be removed immediately after use, because it carries no meaning.

If you simply want to type less characters, I suggest to create a Live Template for that.

Upvotes: 1

msrd0
msrd0

Reputation: 8371

If you don't mind putting some utility code somewhere you can use this code:

e()

And the utility code:

fun e() : Nothing = throw Exception()

The Nothing return type tells the compiler that the function will never return.

Upvotes: 0

hotkey
hotkey

Reputation: 147951

Here's an even shorter one:

1/0

It throws java.lang.ArithmeticException: / by zero.

Upvotes: 6

donfuxx
donfuxx

Reputation: 11323

So far the shortest I can imagine is:

""[1]

5 chars and will lead to StringIndexOutOfBoundsException: length=0; index=1

Upvotes: 0

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