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package javax.servlet;


    /** 
      * This is the event class for notifications of changes to the 
      * attributes of the servlet request in an application.
      * @see ServletRequestAttributeListener
      * @since Servlet 2.4
      */

public class ServletRequestAttributeEvent extends ServletRequestEvent { 
    private String name;
    private Object value;

     /** Construct a ServletRequestAttributeEvent giving the servlet context
      * of this web application, the ServletRequest whose attributes are
      * changing and the name and value of the attribute.
      *
      * @param sc		the ServletContext that is sending the event.
      * @param request		the ServletRequest that is sending the event.
      * @param name		the name of the request attribute.
      * @param value		the value of the request attribute.
      */
    public ServletRequestAttributeEvent(ServletContext sc, ServletRequest request, String name, Object value) {
        super(sc, request);
        this.name = name;
        this.value = value;
    }

    /**
      * Return the name of the attribute that changed on the ServletRequest.
      *
      * @return		the name of the changed request attribute
      */
    public String getName() {
        return this.name;
    }

    /**
      * Returns the value of the attribute that has been added, removed or 
      * replaced. If the attribute was added, this is the value of the 
      * attribute. If the attribute was removed, this is the value of the 
      * removed attribute. If the attribute was replaced, this is the old 
      * value of the attribute.
      *
      * @return		the value of the changed request attribute
      */
    public Object getValue() {
        return this.value;   
    }
}