Web Reference: Predefined Annotation Types A set of annotation types are predefined in the Java SE API. Some annotation types are used by the Java compiler, and some apply to other annotations. Annotation Types Used by the Java Language The predefined annotation types defined in java.lang are @Deprecated, @Override, and @SuppressWarnings. Sep 27, 2025 · User-defined annotations can be used to annotate program elements, i.e. variables, constructors, methods, etc. These annotations can be applied just before the declaration of an element (constructor, method, classes, etc). The annotation type can be one of the types that are defined in the java.lang or java.lang.annotations packages of the Java SE API. In the previous examples, Override and SuppressWarnings are predefined Java annotations.
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