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package javax.servlet.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

This annotation is used to declare a WebListener. Any class annotated with WebListener must implement one or more of the ServletContextListener, ServletContextAttributeListener, ServletRequestListener, ServletRequestAttributeListener, HttpSessionListener, or HttpSessionAttributeListener, or HttpSessionIdListener interfaces. 
Since:
Servlet 3.0/**
 * This annotation is used to declare a WebListener.
 *
 * Any class annotated with WebListener must implement one or more of
 * the {@link javax.servlet.ServletContextListener}, 
 * {@link javax.servlet.ServletContextAttributeListener},
 * {@link javax.servlet.ServletRequestListener},
 * {@link javax.servlet.ServletRequestAttributeListener}, 
 * {@link javax.servlet.http.HttpSessionListener}, or
 * {@link javax.servlet.http.HttpSessionAttributeListener}, or
 * {@link javax.servlet.http.HttpSessionIdListener} interfaces.
 * 
 * @since Servlet 3.0
 */
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface WebListener {
    
Description of the listener
Returns:
description of the listener/**
     * Description of the listener
     *
     * @return description of the listener
     */
    String value() default "";
}