?– Web server. In Java servlets, the init() method is automatically called by the servlet container (e.g., Tomcat, Jetty) when the servlet is first loaded into memory. It is part of the servlet lifecycle and is invoked only once during the servlet’s initialization. So, the correct answer to the question “Who is loading the init() method of servlet?” would be: The servlet container (or servlet engine) is responsible for loading and invoking the init() method of a servlet.

A Scrollbar is a Component, but not a Container whereas Scrollpane is a Conatiner and handles its own events and perform its own scrolling. In Core Java, a Scrollbar and a ScrollPane are two distinct components used for handling scrolling behavior in graphical user interfaces. Here’s the difference between them: Scrollbar: A Scrollbar is a user interface component that provides a graphical representation of the current position within a larger data set. It is typically associated with a single-dimensional range,…

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An adapter class provides an empty implementation of all methods in an event listener interface. Adapter classes are useful when you want to receive and process only some of the events that are handled by a particular event listener interface. You can define a new class to act listener by extending one of the adapter classes and implementing only those events in which you are interested. For example, the MouseMotionAdapter class has two methods, mouseDragged()and mouseMoved(). The signatures of these…

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public, abstract and final can be used for top-level class. In Java, a top-level class (i.e., a class that is not a nested or inner class) can have the following modifiers: public: The class can be accessed from any other class. (default, no modifier): If no access modifier is specified, the class is only accessible within the same package. So, the correct answer would be public and the default (package-private) modifier.