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  varargs question  (Read 1444 times)
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Offline wingsOrc

Senior Newbie


Medals: 1



« Posted 2012-01-22 00:38:28 »

I have the following code:
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   public static String dumpHex(byte... hex) {
      String format = "$";

      for (int i = 0; i < hex.length; i++) {
         format += "%02X ";
      }
      return String.format(format,hex);
   }


My methods takes varargs and String.format too. But this gives me a IllegalFormatConversionException. How do I solve this ?
Offline ra4king

JGO Kernel


Medals: 506
Projects: 3
Exp: 5 years


I'm the King!


« Reply #1 - Posted 2012-01-22 02:33:23 »

I don't know about formatting but the Javadoc point to this for more details Smiley

Offline Matthias

Senior Devvie


Medals: 5
Projects: 1


TWL - Themable Widget Library


« Reply #2 - Posted 2012-01-22 13:56:28 »

String.format expects an Object[] where each entry corresponds to one argument you want to format.
You could try this:
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...
Object[] tmp = new Object[hex.length];
for(int i=0 ; i<hex.length ; i++) {
   tmp[i] = Integer.valueOf(hex[i] & 255);
}
return String.format(format, tmp);
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