static boolean checkSumPrime ( String str ) {
  int summ = 0 ;
  for ( int i = 1 ;
  i < str . length ( ) ;
  i ++ ) summ += Math . abs ( str . charAt ( i - 1 ) - str . charAt ( i ) ) ;
  if ( Prime ( summ ) ) return true ;
  else return false ;
}

static boolean checkSumPrime ( String str ) { int summ = 0 ; for ( int i = 1 ; i < str . length ( ) ; i ++ ) summ += Math . abs ( str . charAt ( i - 1 ) - str . charAt ( i ) ) ; if ( Prime ( summ ) ) return true ; else return false ; }
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