Yes you can call init method in destroy.
public void destroy(){
		try {
			init();
		}
		catch(Exception e){
			
		}
	}

if suppose we take the servlet programming side then
whenever u type the URL first web browser call the service
method then create the servlet object then call the
init()method whenever we call the init method start the
proceesses of the particular object operation suppose we
call the destroy()method before completion of the particular
object operation servelet object is removed then when we r
call the service method then create the servelet object 

In the Servlet programming context, the destroy() method 
can never be called by your code and is called by the 
servlet container

In the servlet life cycle First our request calls to the 
init()method,Inside it will doing some operations related 
to the objects after that it will cal the destory() method
The destory()removes the servlet object,before calling to 
service() method.

Yes you can call a destroy() method in init() method, but 
remember destroy() method will behave like normal method 
but not as life-cycle method.

a call to the destroy method will happen and the resources
will be released and the flow will continue as it is and
will throw an exception if the released resource is used
indie the service method call.

a call to the destroy method will happen and the resources
will be released and the flow will continue as it is and
will throw an exception if the released resource is used
indie the service method call.

This action does not disturb the normal life cycle flow of the servlet. The servlet will work normal. You may test the below code.

/**
 * @author Suraj
 *
 */
public class TestServlet extends HttpServlet {
	

	public void init(ServletConfig config)throws ServletException{
		super.init(config);
	destroy();	
	}
	
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		
		System.out.println("I am test servlet.");
	}

}

Web.xml
--------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<display-name>Servlet</display-name>
	<servlet>
		<servlet-name>TestServlet</servlet-name>
		<servlet-class>com.esspl.TestServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>TestServlet</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
</web-app>
------------------------------------
Test URL: http://<HOST>:<PORT>/<Context>/TestServlet.do