private Object invokeMethod()

in src/main/java/org/apache/commons/beanutils2/PropertyUtilsBean.java [1020:1055]
33 lines of code
9 McCabe index (conditional complexity)

    private Object invokeMethod(final Method method, final Object bean, final Object... values) throws IllegalAccessException, InvocationTargetException {
        Objects.requireNonNull(bean, "bean");
        try {
            return method.invoke(bean, values);
        } catch (final NullPointerException | IllegalArgumentException cause) {
            // JDK 1.3 and JDK 1.4 throw NullPointerException if an argument is
            // null for a primitive value (JDK 1.5+ throw IllegalArgumentException)
            final StringBuilder valueString = new StringBuilder();
            if (values != null) {
                for (int i = 0; i < values.length; i++) {
                    if (i > 0) {
                        valueString.append(", ");
                    }
                    if (values[i] == null) {
                        valueString.append("<null>");
                    } else {
                        valueString.append(values[i].getClass().getName());
                    }
                }
            }
            final StringBuilder expectedString = new StringBuilder();
            final Class<?>[] parTypes = method.getParameterTypes();
            if (parTypes != null) {
                for (int i = 0; i < parTypes.length; i++) {
                    if (i > 0) {
                        expectedString.append(", ");
                    }
                    expectedString.append(parTypes[i].getName());
                }
            }
            throw new IllegalArgumentException("Cannot invoke " + method.getDeclaringClass().getName() + "." + method.getName() + " on bean class '"
                    + bean.getClass() + "' - " + cause.getMessage()
                    // as per https://issues.apache.org/jira/browse/BEANUTILS-224
                    + " - had objects of type \"" + valueString + "\" but expected signature \"" + expectedString + "\"", cause);
        }
    }