Dates are complex data types, unlike simpler mathematical entities like integers, and often present unexpected challenges. Despite this complexity, functional programming principles can be effectively applied to date handling. However, some developers struggle with this, as illustrated by a problematic Java code example. This example uses a list of three lambda functions to compare two LocalDateTime objects by year, month, and day. It streams these functions, applies them to the dates, and returns the first non-zero difference found, defaulting to zero if all differences are zero. The author expresses strong disapproval of this approach, deeming it unnecessarily convoluted and fundamentally flawed despite it producing the correct output. The submitter of the code replaced this entire complex logic with a single, elegant line of code. This superior solution utilizes the built-in compareTo method after converting the LocalDateTime objects to LocalDate objects. This demonstrates a more idiomatic and efficient way to handle date comparisons in Java.