static int countSetBits ( long x ) {
  int setBits = 0 ;
  while ( x != 0 ) {
    x = x & ( x - 1 ) ;
    setBits ++ ;
  }
  return setBits ;
}

static int countSetBits ( long x ) { int setBits = 0 ; while ( x != 0 ) { x = x & ( x - 1 ) ; setBits ++ ; } return setBits ; }
(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: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (update_expression (identifier))))) (return_statement (identifier))))