private static double integral ( double x ) {
  double t = x - 1 ;
  return t - ( Math . sqrt ( x * ( 2 - x ) ) * t + Math . asin ( t ) ) / 2 ;
}

private static double integral ( double x ) { double t = x - 1 ; return t - ( Math . sqrt ( x * ( 2 - x ) ) * t + Math . asin ( t ) ) / 2 ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (floating_point_type) name: (identifier))) body: (block (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (return_statement (binary_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (identifier)))))) right: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) right: (decimal_integer_literal))))))