+ +

onX

Sup dawg, we heard you like annotations, so we put annotations in your annotations so you can annotate while you're annotating.

Overview

+ This feature is considered 'workaround status' - it exists in order to allow users of lombok that cannot work without this feature to have access to it anyway. If we find a better way to implement this feature, or some future java version introduces an alternative strategy, this feature can disappear without a reasonable deprecation period. Also, this feature may not work in future versions of javac. Use at your own discretion. +

+ Most annotations that make lombok generate methods or constructors can be configured to also + make lombok put custom annotations on elements in the generated code. +

+ @Getter, @Setter, and @Wither support the onMethod + option, which will put the listed annotations on the generated method. +

+ @AllArgsConstructor, @NoArgsConstructor, and @RequiredArgsConstructor support the onConstructor option which will put the listed annotations on the generated constructor. +

+ @Setter and @Wither support onParam in addition to onMethod; annotations listed will be put on the only parameter that the generated method has. +

+ None of the mentioned annotations above actually have parameters named onMethod, onParam, or onConstructor; nevertheless, if you type them, lombok will make it work. Unfortunately this does mean that auto-complete and other tool-driven convenience features will not work as expected. The annotations lack these parameters in order to work around javac limitations. +

With Lombok

@HTML_PRE@

Vanilla Java

@HTML_POST@

Small print

+ We can't think of any small print for this feature, other than to reiterate: This feature can disappear at any time; if you use this feature, be prepared to adjust your code when we find a nicer way of implementing this feature, or, if a future version of javac forces us to remove this feature entirely with no alternative. +

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