public GenericServlet() 
{

}

Does nothing. All of the servlet initialization is done by one of the init methods.

 public  void destroy() 
{

}

Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. See Servlet#destroy .

 public String getInitParameter(String name) 
{
	return getServletConfig().getInitParameter(name);
}

Returns a String containing the value of the named initialization parameter, or null if the parameter does not exist. See ServletConfig#getInitParameter .

This method is supplied for convenience. It gets the value of the named parameter from the servlet's ServletConfig object.

 public Enumeration getInitParameterNames() 
{
	return getServletConfig().getInitParameterNames();
}

Returns the names of the servlet's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the servlet has no initialization parameters. See ServletConfig#getInitParameterNames .

This method is supplied for convenience. It gets the parameter names from the servlet's ServletConfig object.

 public ServletConfig getServletConfig() 
{
	return config;
}

Returns this servlet's ServletConfig object.

 public ServletContext getServletContext() 
{
	return getServletConfig().getServletContext();
}

Returns a reference to the ServletContext in which this servlet is running. See ServletConfig#getServletContext .

This method is supplied for convenience. It gets the context from the servlet's ServletConfig object.

 public String getServletInfo() 
{
	return "";
}

Returns information about the servlet, such as author, version, and copyright. By default, this method returns an empty string. Override this method to have it return a meaningful value. See Servlet#getServletInfo .

 public String getServletName() 
{
        return config.getServletName();
}

Returns the name of this servlet instance. See ServletConfig#getServletName .

 public  void init() throws ServletException 
{

}

A convenience method which can be overridden so that there's no need to call super.init(config).

Instead of overriding #init(ServletConfig) , simply override this method and it will be called by GenericServlet.init(ServletConfig config). The ServletConfig object can still be retrieved via #getServletConfig .

 public  void init(ServletConfig config) throws ServletException 
{
	this.config = config;
	this.init();
}

Called by the servlet container to indicate to a servlet that the servlet is being placed into service. See Servlet#init .

This implementation stores the ServletConfig object it receives from the servlet container for later use. When overriding this form of the method, call super.init(config).

 public  void log(String msg) 
{
	getServletContext().log(getServletName() + ": "+ msg);
}

Writes the specified message to a servlet log file, prepended by the servlet's name. See ServletContext#log(String) .

 public  void log(String message,
    Throwable t) 
{
	getServletContext().log(getServletName() + ": " + message, t);
}

Writes an explanatory message and a stack trace for a given Throwable exception to the servlet log file, prepended by the servlet's name. See ServletContext#log(String, Throwable) .

 abstract public  void service(ServletRequest req,
    ServletResponse res) throws ServletException, IOException
Called by the servlet container to allow the servlet to respond to
a request.  See Servlet#service .

This method is declared abstract so subclasses, such as 
HttpServlet, must override it.