complete notes on advance java in java

setSecure method indicates to the web browser that the cookie should only be sent using a secure protocol (https). getSecure method returns the value of the ‘secure’ flag. As of my last knowledge update in January 2022, there is no standard method named setSecure() or getSecure() specifically in the Java Servlet API for handling cookies. … Read more

getRequestDispatcher(path): In order to create it we need to give the relative path of the resource getRequestDispatcher(path):In order to create it we need to give the absolute path of the resource. In Java EE (Enterprise Edition) or Jakarta EE, the request.getRequestDispatcher() and context.getRequestDispatcher() methods are used to obtain a RequestDispatcher object, but they are associated … Read more

ServletConfig:  One ServletConfig Object is created per servlet It can be used to access ServletContext Parameters are configured in DD(deployment description) ServletContext One ServletContext will be created per web application. Can be used to access web app parameter. Can be used to get server Info. In Java web development, both ServletContext and ServletConfig are important components, … Read more

During initialization or service of a request, the servlet instance can throw an UnavailableException or a ServletException. In Java, if a servlet is not properly initialized, it may throw the ServletException. The ServletException is a generic exception that can be thrown by a servlet to indicate that it encountered difficulty during its initialization or servicing. … Read more

System.out goes to ‘client side’ and is seen in browser, while System.err goes to ‘server side’ and is visible in error logs and/or on console. In Java, including Advanced Java, System.out and System.err are both instances of PrintStream that represent standard output and standard error streams, respectively. In the context of a Servlet: System.out (Standard … Read more