Technical Interview Questions
Using System.exit(1); in try block will not allow finally code to execute The code in a finally clause is designed to execute regardless of whether an exception is thrown or not. However, there are certain situations where the finally block may not execute. Here are a few scenarios: System.exit(): If the JVM exits, the finally … Read more
You can use a client-side Refresh or Server Push. To automatically refresh a servlet when new data has entered the database, you can consider implementing a mechanism known as “long polling” or using technologies like WebSockets. Here’s a brief explanation of both approaches: Long Polling: In long polling, the client makes a request to the … Read more
Yes, of course you can use the constructor instead of init(). There’s nothing to stop you. But you shouldn’t. The original reason for init() was that ancient versions of Java couldn’t dynamically invoke constructors with arguments, so there was no way to give the constructur a ServletConfig. That no longer applies, but servlet containers still … Read more
YES. JSP technology is extensible through the development of custom actions, or tags, which are encapsulated in tag libraries. Yes, JavaServer Pages (JSP) technology is extensible. JSP allows developers to create custom tags, known as JSP custom tags or simply custom tags, to encapsulate reusable functionality. This extensibility enables developers to extend the standard JSP … Read more
Because no plug-ins or security policy files are needed on the client systems(applet does). Also, JSP pages enable cleaner and more module application design because they provide a way to separate applications programming from web page design. This means personnel involved in web page design do not need to understand Java programming language syntax to … Read more