java - Changing the format specifier in the printf() method results in IllegalFormatFlagsException -

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in following code, after changing format specifier in printf() method %04d%n %0-4d%n, , running code results in

exception in thread "main" java.util.illegalformatflagsexception:

flags = '-0'

the complete source code follows:

public class minarray {      public static void main(string[] args) {          byte[] storeminimum = new byte[5];         byte[] trialarray = new byte[15];          for(byte bt=0; bt < storeminimum.length; bt++){             randomize(trialarray);             storeminimum[bt] = findminimum(trialarray);         }          (byte minvalue : storeminimum)             system.out.printf("%0-4d%n", minvalue);      }      private static byte findminimum(byte[] valarray) {         byte minvalue = valarray[0];          for(byte bt=0; bt < valarray.length; bt++)             minvalue = (byte) math.min(minvalue, valarray[bt]);          return minvalue;     }      private static void randomize(byte[] valarray) {         (byte bt = 0; bt < valarray.length; bt++)             valarray[bt] = (byte) (math.random()*128);     }  }

can explain, how have happened, since wanted byte literal displayed left-justified 4 character positions? also, please suggest fix same.

i think when write

system.out.printf("%04d%n", minvalue);

it's right-justified. empty space in left replaced '0'.

the '-' used left-justified.

they can't used together.


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