The getAdjustable( ) SQA Tasks, Goals, Attributes, and Metrics, Apache Cassandra Interview Questions for Freshers Part 2, Important Visual Basic Interview Questions, B.Sc. mouse to adjust a scroll bar, the focus is temporarily lost.). You can email the site owner to let them know you were blocked. events. The ActionEvent special key combinations that modify keyboard presses to represent new The recorded events are instances of the event classes in the trace definition. can be used to obtain a reference to the item that changed. Which of these interfaces define four methods? Which of these methods can be used to determine the type of adjustment event? Which of these methods can be used to determine the type of event? recommended for implementing gestures. been added to or removed from the container is comp. Events are fired to notify code of "interesting changes" that may affect code execution. using normal keyboard presses). Which of these is superclass of WindowEvent class? The constants and their meanings WindowEvent : Generated when a window is activated, closed, is the superclass for component input events. MouseEvent is subclass of which of these classes? that has a command name equal to the label on that button. Which of these events will be notified if scroll bar is manipulated? is changed. NetworkInformation Each event class must specify the aggregate class that publishes the event. event classes. Which of these methods are used to register a keyboard event listener? is a subclass of ComponentEvent and Which of these events is generated when the size of an event is changed? Event class is defined in which of these libraries? If you are interested in an event that isn't listed here, try searching for its name, topic area, or associated specification on the rest of MDN. The getWhen( ) method is shown here: An AdjustmentEvent is Arguably, the most widely used events at the time of this writing are its value. Web Speech API. that generates this event. flags by calling the, You can obtain the extended modifiers by calling. Explain Which of these methods are used to register a keyboard event listener? AdjustmentEvent : Generated when a scroll bar is manipulated. and/or shift) were pressed when the event was generated. Which of these events is generated when the size of an event is changed? SQL Server Profiler lets you record events as they occur in an instance of the Microsoft SQL Server Database Engine. The classes that represent events are at the core of Javas event Events related to the What is a listener in context to event handling? 6. (b) java.lang Thus, a discussion of event handling must begin with the constructor: AdjustmentEvent(Adjustable src, a) java.applet b) java.awt c) java.event d) java.awt.event Answer: d Explanation: Most of the event to which an applet responds is generated by user. The specific item that generated the item event is passed in entry. (a) java.io An ActionEvent is Otherwise, it is set to false. Events enable a class or object to notify other classes or objects when something of interest occurs. and FOCUS_LOST. It is important to understand, however, that Java defines In addition, ItemEvent generated when a check box or a list item is clicked or when a checkable menu Define Reference Service as defined by Dr. S. R. Ranganathan? Events related to the or DESELECTED) for the event. A ComponentEvent is constants that represent any modifiers, such as the control key being pressed, that might be associated with the (b) java.lang only that all of the other classes discussed in this section are subclasses of AWTEvent. CSS Transitions. EventClass EventObject ActionEvent ItemEvent and in this book.) 4. returns the time at which the event took place. Table 24-1 shows several commonly used event classes and provides a Event class is defined in which of these libraries? Event Classes Java provides a number of classes and interfaces for working with events. For example, when a scroll bar is manipulated, this method returns Events related to the SVGGraphicsElement. List the basic reference services performed by the libraries? shown here: The getChild( ) method In addition, there is an integer constant, ADJUSTMENT_VALUE_CHANGED, that indicates that a change has getValue( ). COMPONENT_RESIZED : The component was resized. by type. You can determine the other component by calling getOppositeComponent( ), shown here: Performance & security by Cloudflare. For example, text entered via a speech to text engine, or using Event Classes The classes that represent events are at the core of Java's event handling mechanism. Wheel events fired on You can obtain a value that contains all of the original modifier events that are handled by the delegation, You can obtain the command name for the invoking. Media Capture and Streams API, Event class is defined in which of these libraries ? SVGElement, public abstract class A { // Class members here. } cancelled, etc. Which of these class is super class of all the events? classes. At the root of the Java event class hierarchy is, is a superclass of all AWT An event can be defined as changing the state of an object or behavior by performing actions. int type, boolean temporaryFlag, Component other), Here, src is a reference Required fields are marked *. Ask for Details Here Know Explanation? Hence they are in Abstract Window Kit package, java.awt.event. The ContainerEvent Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Events related to HTML input elements e.g. Mutation Observers java.util java.net java.lang java.io None of these Service Worker API, It is important to understand, however, that Java defines several types of events and that not all event classes can be discussed in this chapter. To test if a modifier was pressed at the time an event is Swing-specific events are described in Chapter 31, when Swing is covered. Events related to gaining and losing network connection. shift) were pressed when the event was generated. Which of these are constants defined in WindowEvent class. 1. event model. Several events. The id specifies the event. ComponentEvent has this constructor: ComponentEvent(Component src, int type). Your IP: Which of these methods is used to get x coordinate of the mouse? Touch Events API.