Lombok功能

青旅半醒 2022-06-14 09:43 118阅读 0赞

# Lombok features. #

#### [`val`][val] ####

Finally! Hassle-free final local variables.

#### [`@NonNull`][NonNull] ####

or: How I learned to stop worrying and love the NullPointerException.

#### [`@Cleanup`][Cleanup] ####

Automatic resource management: Call your `close()` methods safely with no hassle.

#### [`@Getter/@Setter`][Getter_Setter] ####

Never write `public int getFoo() {return foo;}` again.

#### [`@ToString`][ToString] ####

No need to start a debugger to see your fields: Just let lombok generate a `toString` for you!

#### [`@EqualsAndHashCode`][EqualsAndHashCode] ####

Equality made easy: Generates `hashCode` and `equals` implementations from the fields of your object..

#### [`@NoArgsConstructor, @RequiredArgsConstructor and @AllArgsConstructor`][NoArgsConstructor_ _RequiredArgsConstructor and _AllArgsConstructor] ####

Constructors made to order: Generates constructors that take no arguments, one argument per final / non-nullfield, or one argument for every field.

#### [`@Data`][Data] ####

All together now: A shortcut for `@ToString`, `@EqualsAndHashCode`, `@Getter` on all fields, and `@Setter` on all non-final fields, and `@RequiredArgsConstructor`!

#### [`@Value`][Value] ####

Immutable classes made very easy.

#### [`@Builder`][Builder] ####

... and Bob's your uncle: No-hassle fancy-pants APIs for object creation!

#### [`@SneakyThrows`][SneakyThrows] ####

To boldly throw checked exceptions where no one has thrown them before!

#### [`@Synchronized`][Synchronized] ####

`synchronized` done right: Don't expose your locks.

#### [`@Getter(lazy=true)`][Getter_lazy_true] ####

Laziness is a virtue!

#### [`@Log`][Log] ####

Captain's Log, stardate 24435.7: "What was that line again?"

[val]: https://projectlombok.org/features/val
[NonNull]: https://projectlombok.org/features/NonNull
[Cleanup]: https://projectlombok.org/features/Cleanup
[Getter_Setter]: https://projectlombok.org/features/GetterSetter
[ToString]: https://projectlombok.org/features/ToString
[EqualsAndHashCode]: https://projectlombok.org/features/EqualsAndHashCode
[NoArgsConstructor_ _RequiredArgsConstructor and _AllArgsConstructor]: https://projectlombok.org/features/constructor
[Data]: https://projectlombok.org/features/Data
[Value]: https://projectlombok.org/features/Value
[Builder]: https://projectlombok.org/features/Builder
[SneakyThrows]: https://projectlombok.org/features/SneakyThrows
[Synchronized]: https://projectlombok.org/features/Synchronized
[Getter_lazy_true]: https://projectlombok.org/features/GetterLazy
[Log]: https://projectlombok.org/features/log