+ +

@UtilityClass

Utility, metility, wetility! Utility classes for the masses.

Since

+ @UtilityClass was introduced as an experimental feature in lombok v1.16.2. +

Experimental

+ Experimental because: +

Some debate as to whether its common enough to count as boilerplate.

+ Current status: positive - Currently we feel this feature may move out of experimental status with no or minor changes soon. +

Overview

+ A utility class is a class that is just a namespace for functions. No instances of it can exist, and all its members + are static. For example, java.lang.Math and java.util.Collections are well known utility classes. This annotation automatically turns the annotated class into one. +

+ A utility class cannot be instantiated. By marking your class with @UtilityClass, lombok will automatically + generate a private constructor that throws an exception, flags as error any explicit constructors you add, and marks + the class final. If the class is an inner class, the class is also marked static. +

+ All members of a utility class are automatically marked as static. Even fields and inner classes. +

With Lombok

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Vanilla Java

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Small print

+ There isn't currently any way to create non-static members, or to define your own constructor. If you want to instantiate + the utility class, even only as an internal implementation detail, @UtilityClass cannot be used. +

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