advance java in java notes

We can override jspinit() and jspDestroy() methods but not _jspService(). In advanced Java, specifically when dealing with JavaServer Pages (JSP), you cannot override the jspInit() and jspDestroy() methods. These methods are part of the HttpJspPage interface, which is implemented by the container when it translates a JSP page into a servlet. The jspInit() method is … Read more

When a JSP include directive is used, the included file’s code is added into the added JSP page at page translation time, this happens before the JSP page is translated into a servlet. While if any page is included using action tag, the page’s output is returned back to the added page. This happens at … Read more

Using <%jsp:param> tag. In JavaServer Pages (JSP), you can pass information from one JSP page to another, especially when using include directives. One way to achieve this is by using request attributes. Here’s an example of how you can pass information from one JSP to another using request attributes: Set Attribute in the Parent JSP: … Read more

request.getRequestDispatcher(path): In order to create it we need to give the relative path of the resource context.getRequestDispatcher(path): In order to create it we need to give the absolute path of the resource. In Java Servlet programming, both request.getRequestDispatcher() and context.getRequestDispatcher() are used to obtain a RequestDispatcher object, but they differ in the way they determine … Read more

ServletContext: Gives the information about the container PageContext: Gives the information about the Request In advanced Java programming, ServletContext and PageContext are two different objects used in web applications, particularly in the context of JavaServer Pages (JSP) and servlets. Here’s a brief explanation of the differences between ServletContext and PageContext: Scope: ServletContext: It represents the … Read more