Just like applets, servlets can define init and destroy methods. A servlet's init ServletConfig method is called by the server immediately after the server constructs the servlet's instance. Depending on the server and its configuration, this can be at any of these times:. When the servlet is first requested, just before the service method is invoked. In any case, init is guaranteed to be called before the servlet handles its first request.
Complete Java Servlets Tutorial
Although servlets can respond to any type of request, they are most commonly written to respond to web-based requests. A servlet must be deployed to a Java servlet container in order to become usable. That said, a fundamental knowledge of Java servlet technology could be very useful for any Java web developer. In this tutorial, we will cover below topics to get overall understanding of java servlet technology. Our first servlet is very simple servlet having very minimum code, so that you can only focus on what matters. To register above servlet with web container, you will make an entry web.
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A servlet life cycle can be defined as the entire process from its creation till the destruction. The following are the paths followed by a servlet. The init method is called only once.