private static String replaceLeadingZero ( String generated ) { if ( generated . charAt ( 0 ) == ' ' ) { // find number > 0 as replacement to avoid leading zero numbers int replacement = 0 ; while ( replacement == 0 ) { replacement = generator . nextInt ( 10 ) ; } return replacement + generated . substring ( 1 ) ; } else { return generated ; } }
Replaces first leading zero number if present .