java 13 interview questions and answers

There are three scripting language elements: declarations, scriptlets, expressions. In advanced Java, specifically in JavaServer Pages (JSP), there are three types of scripting elements: Declarations: Declarations are used to declare variables or methods that can be used later in the JSP file. They are defined using the <%! %> syntax.Example: jsp <%! int myVariable = … Read more

SQLWarning objects are a subclass of SQLException that deal with database access warnings. Warnings do not stop the execution of an application, as exceptions do; they simply alert the user that something did not happen as planned. A warning can be reported on a Connection object, a Statement object (including PreparedStatement and CallableStatement objects), or … Read more

It is used to create an instance of a driver and register it with the DriverManager. When you have loaded a driver, it is available for making a connection with a DBMS. In Advanced Java, specifically when dealing with database connectivity, the Class.forName method is used to dynamically load the JDBC driver class. JDBC (Java … Read more

The Local Systems IP Address and Port Number. And the Remote System’s IPAddress and Port Number. To create a TCP socket in advanced Java programming, you need the following information: IP Address: The IP address of the server to which you want to establish a connection. This could be the IP address of a remote … Read more

JMS provide for two messaging models, publish-and-subscribe and point-to-point queuing. Java Message Service (JMS) provides two messaging models: Point-to-Point (P2P) Model: In this model, messages are sent from one producer to one consumer. The messages are placed on a queue, and only one consumer can consume a message. The point-to-point model is typically used for … Read more