Java @AnnotationName()

In Java, an annotation is a special kind of syntax that can be used to provide additional information about a program element, such as a class, method, or field. Annotations are defined using the @interface keyword and can be applied to a program element using the @AnnotationName syntax.

Here is an example of how to define and use an annotation in Java:

import java.lang.annotation.*;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@interface Test {
  String value() default "";
}

class Example {
  @Test
  public void testMethod() {
    // code goes here
  }
}

In this example, the @Test annotation is defined and applied to the testMethod method. The @Retention and @Target annotations specify the retention policy and target elements for the @Test annotation.

You can also define parameters for an annotation using the name() syntax, for example:

@interface Test {
  String value() default "";
  int timeout() default 1000;
}

Annotations can be used to provide additional metadata about a program element, and can be accessed at runtime using reflection.