How to Write Code Nobody Can Maintain – A Satirical Guide

01 Variable Naming

Use easy‑to‑type names like Fred or asdf.

Single‑letter names (a, b, c, x, y, z) and variations (a1, a2, …).

Deliberate misspellings (e.g., SetPintleOpening).

Overly abstract names ( ProcessData, DoIt, GetData).

Cryptic abbreviations (WTF, RTFSC, BT, TMD, TJJTDS).

Random capitalisation (gEtnuMbER).

Reuse the same name in nested blocks.

Use diacritics ( int ínt).

Underscores only ( _, __, ___).

Mix languages (English, German, Chinese pinyin).

Symbolic names (slash, asterix, comma).

Irrelevant words (god, superman, iloveu).

Confuse l and 1.

02 Deceptive Camouflage

Interleave comments and code.

Make UI labels differ from variable names (e.g., UI shows “postal code” while code uses zipcode).

Hide global variables by passing them as function parameters.

Use similar variable names (swimmer vs swimner, ilI1|, oO08, parseInt vs parselnt, etc.).

Overload functions with unrelated behavior.

Operator overloading to produce bizarre effects (e.g., overload ! to return an integer, then apply !!).

03 Documentation and Comments

Let comments become outdated by not updating them.

Write meaningless comments (e.g., /* add 1 to i */).

Document only the "what" not the "why".

Avoid revealing secrets in comments.

Write excessively detailed documentation (hundreds of pages, deep numbering).

Ignore units consistency and never comment on them.

Never document pitfalls (Gotchas).

Vent frustrations in comments.

04 Programming Tactics

Exploit Java casting everywhere.

Introduce redundant code (e.g., Bubblegum b = new Bubblegom();).

Never validate inputs or return values.

Expose all internal details (no encapsulation).

Copy‑paste code without understanding.

Create massive listeners filled with if…else chains.

Use high‑dimensional arrays (4‑D, etc.).

Mix direct field access with getters/setters.

Wrap APIs multiple times (6‑8 layers, >4 depth).

Make everything public.

Swap parameter order arbitrarily across releases.

Rename methods inconsistently.

Keep dead code and unused variables.

Mark all subclasses as final.

Avoid layout managers; hard‑code absolute positions.

Initialize members from environment variables instead of constructors.

Scatter global variable initialisation across unrelated functions.

Misalign configuration file keys with code names.

Bloated classes with every possible method.

Deep inheritance hierarchies for each field.

Replace simple code with verbose XML.

Break simple conditions into convoluted expressions.

Misuse semicolons (e.g., if (a); else; { int d; d = c; }).

Indirect casting tricks (e.g., new Double(d).toString()).

Excessive nesting (10+ parentheses, 20+ nested blocks).

Write extremely long lines.

Avoid early return; use deep if‑else instead of break.

Omit braces in control structures and indent arbitrarily.

Trivial encapsulation (e.g., a bool class that does nothing).

Prefer while over for, swap loop bounds, change < to <=, decrement counter.

05 Testing

Never test error handling or system call returns.

Avoid performance testing; blame the user’s hardware.

Skip test case creation and code‑coverage analysis.

Declare testing as cowardly; claim confidence eliminates the need.

06 Other Tips

Obey the boss’s every whim, no matter how absurd.

Hide bugs from the help desk; deflect user complaints.

Keep major bugs secret; monetize them later.

Dress bad code with GoF patterns and agile buzzwords.

Adopt the motto: "Write Everywhere, Read Nowhere".

What do you think? Share your own extreme tricks to sabotage maintainability.