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    MCQ of Unit 3 AJP

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    Tushar Shinde
    The document contains questions and answers related to event handling in Java. It covers topics like events generated from button presses, mouse events, key events, adapter classes, and event classes. The questions ask about specific event classes, methods, packages, and concepts in the Java event handling model like listeners, event sources, and the event delegation model.

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    MCQ of Unit 3 AJP

    Uploaded by

    Tushar Shinde
    1K views7 pages
    The document contains questions and answers related to event handling in Java. It covers topics like events generated from button presses, mouse events, key events, adapter classes, and event classes. The questions ask about specific event classes, methods, packages, and concepts in the Java event handling model like listeners, event sources, and the event delegation model.

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    MCQ of unit 3 AJP

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    The document contains questions and answers related to event handling in Java. It covers topics like events generated from button presses, mouse events, key events, adapter classes, and event classes. The questions ask about specific event classes, methods, packages, and concepts in the Java event handling model like listeners, event sources, and the event delegation model.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    1K views7 pages

    MCQ of Unit 3 AJP

    Uploaded by

    Tushar Shinde
    The document contains questions and answers related to event handling in Java. It covers topics like events generated from button presses, mouse events, key events, adapter classes, and event classes. The questions ask about specific event classes, methods, packages, and concepts in the Java event handling model like listeners, event sources, and the event delegation model.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 7

    CHAPTER-3 (Event Handling)

    Q1. Which of these events generated when a button is pressed?


    a) WindowEvent
    b) ActionEvent
    c) KeyEvent
    d) ActionEvent

    Q2. Method use to change the location of event?


    a) getPoint()
    b) translatePoint()
    c) getClickCount()
    d) isPopupTrigger()

    Q3. Which method will be invoked if a character is entered?


    a) KeyPressed()
    b) KeyReleased()
    c) KeyTyped()
    d) KeyEntered()

    Q4. Which of these is a super class of all adapter class?


    a) Applet
    b) Event
    c) ComponentEvent
    d) InputEvent

    Q5. Which method used to obtain co-ordinates of a mouse?


    a) getPoint()
    b) GetCoordinates()
    c) GetMouseXY()
    d) GetMouseCoordinates()

    Q6. Which of these is a super class of all ContainerEvent class?


    a) WindowEvent
    b) ComponentEvent
    c) ItemEvent
    d) InputEvent

    Q7. Which of these class is super class of all events?


    a) EventObject
    b) EventClass
    c) ActionEvent
    d) ItemEvent
    Q8. ____is a superclass of windowEvent class
    a) WindowEvent
    b) ComponentEvent
    c) ItemEvent
    d) InputEvent

    Q9. Which of these package contains all the event handling interfaces?
    a) Java.lang
    b) Java.awt
    c) Java.awt.event
    d) Java.event

    Q10. Name of event classes?


    a) ActionEvent,ComponentEvent
    b) ContainerEvent,FocusEvent
    c) ItemEvent,KeyEvent
    d) All of these

    Q11. Event object class belongs to


    a) Java.util
    b) Java.awt
    c) Java.lang
    d) Java.sql

    Q12. _____method is defined in mousemotionAdapter class


    a) MouseDragged()
    b) MousePressed()
    c) MouseReleased()
    d) MouseClicked()

    Q13. Which of these constant value will change when the button at the end of scrollbar was
    clicked to increase its value?
    a) BLOCK_DECREMENT
    b) BLOCK_INCREMENT
    c) UNIT_DECREMENT
    d) UNIT_INCREMENT

    Q14. For which Interface method belongs to void adjustmentValueChanged(AdjustmentEvent


    e)?
    a) ObjectListener
    b) AdjustmentListener
    c) ActionListener
    d) ComponentListener
    Q15. For which class this constant belongs to BLOCK_DECREMENT and
    BLOCK_INCREMENT?
    a) Scrollbar
    b) Menubar
    c) Filedialog
    d) Actionevent

    Q16. Which of these events is generated when the size of component is changed?
    a) ComponentEvent
    b) ContainerEvent
    c) FocusEvent
    d) InputEvent

    Q17. Which of these events is generated when the component is added or removed?
    a) ComponentEvent
    b) ContainerEvent
    c) FocusEvent
    d) InputEvent

    Q18. Which of these are integer constants of ComponentEvent class?


    a) COMPONENT_HIDDEN
    b) COMPONENT_MOVED
    c) COMPONENT_RESIZE
    d) All of These

    Q19. Which of these events is generated when computer gains or losses input focus?
    a) ComponentEvent
    b) ContainerEvent
    c) FocusEvent
    d) InputEvent

    Q20. Base class of all AWT Event class is


    a) AwtEvent
    b) KeyEvent
    c) ActionEvent
    d) AdjustmentEvent

    Q21. Which of these event generated when a button is Pressed?


    a) window Event
    b) ActionEvent
    c) KeyEvent
    d) MouseEvent
    Q22. Which is the class responsible for handling key press activity?
    a) KeyEvent
    b) WindowEvent
    c) ActionEvent
    d) mouseEvent

    Q23. Event class library is define in following package


    a) java.io
    b) java.util
    c) java.event
    d) java.object

    Q24. ComponentEvent is a super class of __________


    a) Container Event
    b) FocusEvent
    c) both a and b
    d) None of these

    Q25. TextEvent defines integer constant


    a) TEXT_VALUE_CHANGED
    b) TEXT_VALUE
    c) both a and b
    d) None of these

    Q26. ____ is the abstract super class of all component input event class
    a) KeyEvent
    b) ItemEvent
    c) ActionEvent
    d) InputEvent

    Q27. Event is called as


    a) change in the state of object
    b) change in the state of variable
    c) ActionEvent
    d) InputEvent

    Q28. What is listener in context to event handling?


    a) is a variable that is notified when an event occurs
    b) is an object that is notified when an event occurs
    c) A listener is a method that is notified when an event occurs
    d) None of these

    Q29. Event class is defined in which of these libraries


    a) java.io
    b) java.lang
    c) java.net
    d) java.util

    Q30. Which of these method are used to register a keyboard event listener?
    a) KeyListener()
    b) ADDKeyListener()
    c) addKeyListener()
    d) eventKeyboardListener()

    Q31. Which of these class is super class of all the events?


    a) EventObject
    b) EventClass
    c) ActionEvent
    d) ItemEvent
    a) UNIT_INCREMENT

    Q32. Which of these methods can be used to know which key is pressed?
    a) getKey()
    b) getModifier()
    c) getActionKey()
    d) getActionEvent()

    Q33. Which of these methods can be used to obtain the coordinates of a mouse?
    a) getPoint()
    b) getCoordinates()
    c) GetMouseXY()
    d) getMouseCoordinates()

    Q34. Which of these is superclass of container Event class?


    a) windowEvent
    b) ComponentEvent
    c) ItemEvent
    d) InputEvent

    Q35. Which of these is superclass of all adapter classes?

    a) Applet
    b) ComponentEvent
    c) Event
    d) InputEvent

    Q36. ____method are used to register a mousemotion listener


    a) addMouse()
    b) addMouseListener()
    c) addMouseMotionListener()
    d) eventMouseMotionListener()

    Q37. ___is used to obtain the object that generated a windowEvent.


    a) getMethod()
    b) getWindow()
    c) getWindowEvent()
    d) getWindowObject()

    Q38. MouseEvent is subclass of___classes.


    a) ComponentEvent
    b) ContainerEvent
    c) ItemEvent
    d) InputEvent

    Q39. ___is superclass of windowEvent class.


    a) windowEvent
    b) ComponentEvent
    c) ItemEvent
    d) InputEvent

    Q40. Which of these packages contains all the classes and methods required for even handling in
    Java?
    a) java.applet
    b) java.awt
    c) java.event
    d) java.awt.event

    Q41. What is an event delegation model used by Java programming languages?


    a) An event is an object that describe a state change in a source.
    b) An event is an object that describe a state change in a processing.
    c) An event is an object that describe a any changes by the user and system
    d) An event is a class used for defining object, to create events.

    Q42. Which of these packages contains all the event handling interfaces?
    a) java.lang
    b) java.awt
    c) java.awt.event
    d) java.event

    Q43. Which of these methods is defined in MouseMotionAdapter class?


    a) mouseDragged()
    b) mousePressed()
    c) mouseReleased()
    d) mouseClicked()

    Q44. Interface used to handle menu event is


    a) ActionListener
    b) ItemListener
    c) ComponentListener
    d) ContainerListener

    Q45. Action event is applied on


    a) Button, textFiel, text , menu
    b) Button,TextField,Label
    c) Button, Menu
    d) TextField,Menu

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