![]() You will use it when you want to create your own custom annotation. Annotation type is used for defining an annotation. One is the “annotation” itself another is the “annotation type.” An annotation is the meta-tag that you will use in your code to give it some life. There are two things you need to consider with annotations. In the first part of this three-article series, I’ll describe some basics of Java annotations, their benefits, as well as provide some example usages. Simply speaking, an annotation is a mechanism for associating a meta-tag with program elements and allowing the compiler or the VM to extract program behaviors from these annotated elements and generate interdependent code when necessary. This leads to a declarative programming style where the programmer says what should be done and tools emit the code to do it.” Quoting from Oracle’s official site, “It lets us avoid writing boilerplate code under many circumstances by enabling tools to generate it from annotations in the source code. They provide a helpful way to indicate whether your methods are dependent on other methods, whether they are incomplete, whether your classes have references to other classes, and so on. Annotations are like meta-tags that you can add to your code and apply to package declarations, type declarations, constructors, methods, fields, parameters and variables. Java annotations are one of the main ease-of-development features introduced in JDK 5. The resulting code is also less likely to contain bugs. When the source code is free of boilerplate code, it becomes easier to maintain. First introduced in Java 5.0, annotations are one of the features in that JDK version that shifted the responsibility for writing boilerplate Java code from the programmer to the compiler. Annotation-based development relieves Java developers from the pain of cumbersome configuration. ![]() Learn More.Īnnotation-based Java development is certainly one of the most notable recent development trends. We may make money when you click on links to our partners. ![]() content and product recommendations are editorially independent. ![]()
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