Java coding hacks developers should know 🧵 1) Use Map.ofEntries() for creating multi-pair immutable maps Why: Shorter, immutable, safer and avoids accidental mutation.

theskilledcoder's tweet image. Java coding hacks developers should know 🧵

1)  Use Map.ofEntries() for creating multi-pair immutable maps
Why:  Shorter, immutable, safer and  avoids accidental mutation.

2) Use Optional. map().orElse() instead of manual null handling Why: Eliminates null checks, reads better, and chains smoothly with other logic.

theskilledcoder's tweet image. 2) Use Optional. map().orElse() instead of manual null handling
Why: Eliminates null checks, reads better, and chains smoothly with other logic.

3) Use Enum.valueOf() + name() for safe enum conversion Why: Cleaner, and lets you easily serialize/deserialize enums in APIs, DB, or files.

theskilledcoder's tweet image. 3) Use Enum.valueOf() + name() for safe enum conversion
Why: Cleaner, and lets you easily serialize/deserialize enums in APIs, DB, or files.

4) Use Comparator.comparing().thenComparing() instead of custom logic Why: Clear, readable, no error-prone conditional comparisons

theskilledcoder's tweet image. 4) Use Comparator.comparing().thenComparing() instead of custom logic
Why: Clear, readable, no error-prone conditional comparisons

5) Use Optional.ifPresentOrElse() instead of if-else with isPresent() Why: Cleaner and more expressive - no more manual get() calls or if-else clutter.

theskilledcoder's tweet image. 5) Use Optional.ifPresentOrElse() instead of if-else with isPresent()
Why: Cleaner and more expressive - no more manual get() calls or if-else clutter.

I am hooked to your posts. 🙏


I think this one in shorter: Map.of("key1", "value1", "key2", "value2")


Because all scenarios are one size fits all? Monadic engineering is useful but it is in no way preferable when not needed!


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There's a shorter version. Though it can be more error prone if not properly formatted.

AlloyLauncher's tweet image. There's a shorter version. Though it can be more error prone if not properly formatted.

Ah, thanks for the reminder of just how cumbersome java is to work with. Maybe a decade more and they'll catch up to Kotlin 1.X.


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