static boolean check ( long x ) {
  if ( x == 1 || x == 0 ) return false ;
  for ( long i = 2 ;
  i <= Math . sqrt ( x ) ;
  i ++ ) {
    if ( x % i == 0 ) {
      return false ;
    }
  }
  return true ;
}

static boolean check ( long x ) { if ( x == 1 || x == 0 ) return false ; for ( long i = 2 ; i <= Math . sqrt ( x ) ; i ++ ) { if ( x % i == 0 ) { return false ; } } return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (return_statement (false))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (return_statement (false)))))) (return_statement (true))))