Behaviour of Java String.split() when some answers are the empty string

Can you guess the output of this program?

class SplitTest
{
   static void split( String s )
   {
       System.out.println( s.split( ";" ).length );
   }

   public static void main( String[] args )
   {
       split("");
       split(";");
       split("x;");
       split(";y");
   }
}

Here it is:

$ javac SplitTest.java && java SplitTest
1
0
1
2

Wow. Docs: String.split.

String.split

Side note: It's not easy to fit Java examples into tweets.

> class X{static void x(String

> s){System.out.println(s.split(";").length);}public static void

> main(String[]a){x("");x(";");x("x;");x(";y");}}

> — Andy Balaam (@andybalaam) May 23, 2013

Originally posted at 2013-05-23 12:51:52+00:00. Automatically generated from the original post : apologies for the errors introduced.

May 23, 2013

original post

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