What are annotations in Java? How are they used?
Annotations are a type of metadata in Java that provides data about a program, but does not affect its execution directly. Developers can embed extra information or instructions into the source code. The @ symbol is followed by the name of the annotation.
Java annotations are used for many purposes. They can be used to provide hints to the Java compiler, inform tools and frameworks on how to process the code, or add descriptive metadata to documentation.
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