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From: Stuart <DerTopper@web.de>
Newsgroups: comp.lang.java.programmer
Subject: Re: java code
Date: Sat, 22 Feb 2014 13:57:33 +0100
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On 2/21/2014, Stuart wrote:
 >> It is a pity that Java offers not so many code obfuscation
 >> techniques as C++ does.

On 02/22/14, Joshua Cranmer wrote:
> I disagree, here is some wonderful code obfuscation. Were I more
> involved, I would have tried to find a better obfuscation than roman
> numerals for the main string, but, with any luck, the OP is reading this
> in a client with variable-width font and the text runs together as a
> whole lot of I's.
> public class Test {
>    public static void main(String... args) {
>      char[] K = new char[256];
>      int K = 0, Κ = 0;
>      char[] К = ("ⅠⅠⅠⅠⅠⅠⅠⅠⅢⅢⅢⅢⅢⅢⅤⅣⅠⅢⅢⅢⅢⅢⅢⅢⅢⅡⅥⅠⅠⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅡⅡⅡⅢⅤⅣⅠ" +
>        "ⅢⅠⅢⅡⅡⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅤⅣⅠⅢⅠⅢⅡⅡⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅢⅤⅣⅠⅢⅠⅢⅡⅡ" +
>        "ⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅢⅢⅤⅣⅠⅢⅠⅢⅡⅡⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅢⅢⅢⅤⅣⅠⅢⅠⅢⅡⅡⅥ" +
>        "ⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅢⅢⅢⅢⅤⅣⅠⅢⅠⅢⅡⅡⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅢⅢⅢⅢⅢⅤⅣⅠⅢⅠⅢ" +
>
> "ⅡⅡⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡⅢⅢⅢⅢⅢⅢⅢⅢⅤⅣⅠⅢⅠⅢⅡⅡⅥⅠⅠⅦⅡⅤⅠⅦⅣⅡⅣⅥⅠⅠⅦⅡⅡⅡ").toCharArray();
>
>      int Ⲕ = К.length;
>      while (Κ < К.length) {
>        switch (К[Κ]) {
>        case 'Ⅰ': K++; break;
>        case 'Ⅱ': K--; break;
>        case 'Ⅲ': K[K]++; break;
>        case 'Ⅳ': K[K]--; break;
>        case 'Ⅴ': Ⲕ = Κ; if (K[K] == 0) Κ = Ｋ(К, Κ); break;
>        case 'Ⅵ': Κ = Ⲕ - 1; break;
>        case 'Ⅶ': System.out.print(K[K]); break;
>        }
>        Κ++;
>      }
>    }
>
>    private static int Ｋ(char[] К, int Κ) {
>      int K = 0;
>      for (++Κ; Κ < К.length; Κ++) {
>        if (К[Κ] == 'Ⅴ') K++;
>        else if (К[Κ] == 'Ⅵ' && K-- == 0) return Κ;
>      }
>      return Κ;
>    }
> }

Wow, that's awful.

At first, this code wouldn't run because for some reasons Thunderbird 
treated the K in the lines
     char[] K = new char[256];
and the first K in this line
    int K = 0, Κ = 0;
both as 0x4B, thus making the code erroneous. Or maybe it was one of the 
newsservers that made the substitution.

I never knew that Java allowed Unicode letters in the source code, so I 
even learned something new today.

Thanks for sharing,
Stuart

@Stefan Ram: Sorry, Joshua clearly blew you out of the water...