Fundamentals 6 min read

A Collection of the Worst Code Snippets and What They Teach Us

The article humorously showcases a series of poorly written code examples—from magic numbers and overly long variable names to emoji variables and convoluted switch statements—offering developers reflective commentary on common pitfalls and encouraging better coding practices.

Java Captain
Java Captain
Java Captain
A Collection of the Worst Code Snippets and What They Teach Us

At times we all write code we’re not proud of; this piece gathers some of the worst code snippets the author could find and presents them for reflection.

Reinventing the Wheel Went Wrong

Standard Boolean comparisons often fail to return the desired result, prompting the suggestion to create your own.

Magic Numbers

Changing a single number in the illustrated code can lead to unexpected outcomes.

At Least It’s Split Into Several Lines

The snippet appears to be from a school project, prompting sympathy for the author.

The Devil Is Also a Function

Various implementations of an isEven function are shown as the first candidate.

Wish There Was a Function to Get String Length

A developer quickly implemented a function to obtain a string’s size.

Awakening the Inner Child

The article questions the use of emojis as variable names, presenting the code for readers to judge.

Who Is Reading Commit Messages?

It humorously addresses a colleague who repeatedly uses the same commit message.

If Any of These Changes Occur

Future unpredictability is highlighted, advising caution.

Reasons to Buy an Ultra‑Wide Monitor

Long variable names are defended for readability, asking how long is too long.

Genius Move

A brief comment suggests the code speaks for itself.

Typography Is Best

Discusses type safety and a method to avoid type errors.

If It Works, It Works

Emphasizes ensuring the sum of parameters always equals seven.

Ensuring It’s a Real Bool

Questions the degree of pessimism in code.

Test‑Driven Development Best Practices

Advocates unit testing while pondering random number generation in tests.

Do You Dare to Extend?

Mentions complex switch statements that can become overly long.

Try the Switch Statement

Considers future plans to expand the switch.

Math Is Hard

Notes that using external help isn’t shameful and mentions a popular package with over 150,000 weekly downloads.

When Brilliant Ideas Flow

Encourages personal style but warns against letting such code pass code review.

When You’re a Coder with a Passion for Calligraphy

Experiments with different fonts and questions the legitimacy of “pirated” software code.

Final Thoughts

The author hopes readers enjoy the examples, invites feedback on favorite snippets, and shares personal reflections on past embarrassing code.

debuggingsoftware engineeringcode reviewprogramming fundamentalsbad code
Java Captain
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Java Captain

Focused on Java technologies: SSM, the Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading; occasionally covers DevOps tools like Jenkins, Nexus, Docker, ELK; shares practical tech insights and is dedicated to full‑stack Java development.

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