static int maxDig ( long a ) {
  int max = 0 ;
  while ( a > 0 ) {
    max = Math . max ( max , ( int ) ( a % 10 ) ) ;
    a /= 10 ;
  }
  return max ;
}

static int maxDig ( long a ) { int max = 0 ; while ( a > 0 ) { max = Math . max ( max , ( int ) ( a % 10 ) ) ; a /= 10 ; } return max ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (return_statement (identifier))))