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Object Oriented Programming through Java MCQs - Unit-5
1. Which of these functions is called to display the output of an applet?
A . display()
B . paint()
C . displayApplet()
D . PrintApplet()
2. Which package contains the Java Swing classes?
A . java.lang
B . java.io
C . java.util
D . javax.swing
3. Which layout manager is used by default for JFrame?
A . BorderLayout
B . FlowLayout
C . GridLayout
D . CardLayout
4. Which class is used to create a button in Java Swing?
A . JButton
B . JLabel
C . JRadioButton
D . JTextArea
5. What is the purpose of the setVisible() method in JFrame?
A . To set the size of the frame
B . To set the title of the frame
C . To make the frame visible on the screen
D . To close the frame
6. Which of these methods can be used to output a string in an applet?
A . display()
B . print()
C . drawString()
D . transient()
7. Which of these methods is a part of Abstract Window Toolkit (AWT) ?
A . display()
B . paint()
C . drawString()
D . transient()
8. Which of these modifiers can be used for a variable so that it can be accessed from any thread or parts of a program?
A . transient
B . volatile
C . global
D . No modifier is needed
9. Which of these operators can be used to get run time information about an object?
A . getInfo
B . Info
C . instanceof
D . getinfoof
10. ______________________ follows MVC (Model View Controller) architecture.
A . Swing
B . AWT
C . Both A & B
D . None of the above
11. _________ is not a part of JFC (Java Foundation Classes) that is used to create GUI application?
A . Swing
B . AWT
C . Both A & B
D . None of the above
12. The ActionListener interface is used for handling action events,For example,it`s used by a
A . JButton
B . JCheckbox
C . JMenuItem
D . All of these
13. Java applets are used to create _______________ applications
A . Graphical
B . User interactive
C . Both a & b
D . None of these
14. An Applet is a ________ of Panel:
A . Subclass
B . Superclass
C . Both a & b
D . None of these
15. Which method is used to add components to a container in Java Swing?
A . add()
B . setComponent()
C . insert()
D . append()
16. Which class is a subclass of Component?
A . Container
B . Window
C . Frame
D . none
17. What is the purpose of the setLayout() method in Java Swing?
A . To set the background color of a component
B . To set the size of a component
C . To set the layout manager for a container
D . To set the font style for a component
18. The ____ method is used to obtain the current size of a window.
A . getSize()
B . setSize()
C . None
D . Both
19. Which class is used to display text in Java Swing?
A . JTextField
B . JTextArea
C . JLabel
D . JList
20. Which class is used to display images in Java Swing?
A . JButton
B . JLabel
C . JRadioButton
D . JTextArea
21. Which of these events will be generated if we close the applet?
A . ActionListener
B . ItemListener
C . MouseListener
D . WindowListener
22. What is the default layouts for a applet, a frame and a panel?
A . Flow layout, Border layout, Flow layout
B . Flow layout, Flow layout, Border layout
C . Border layout, Flow layout, Flow layout
D . Border layout,Border layout, Flow layout
23. An Applet has its Layout Manager set to the default of FlowLayout. What code would be the correct to change to another Layout Manager?
A . setLayoutManager(new GridLayout());
B . setLayout(new GridLayout(2,2));
C . setGridLayout(2,2,))
D . setBorderLayout();
24. Which method is used to set the text content of a JTextField?
A . setText()
B . append()
C . setLabel()
D . setContent()
25. Which of the following architecture does the Swing framework use?
A . MVC
B . MVP
C . Layered architecture
D . Master-Slave architecture
26. What is the purpose of the setDefaultCloseOperation() method in JFrame?
A . To set the size of the frame
B . To set the title of the frame
C . To specify the default close operation for the frame
D . To close the frame
27. Which class is used to display tabbed panes in Java Swing?
A . JTabbedPane
B . JSlider
C . JProgressBar
D . JSpinner
28. The ………………… method called the first time an applet is loaded into the memory of a computer.
A . init( )
B . start( )
C . stop( )
D . destroy( )
29. From the following statements which is a drawback for Applet?
A . It works at client side so less response time
B . Most of the web browsers support applets.
C . It can be executed by browsers running under many platforms, including Linux, Windows, and Mac Osetc.
D . Plugin is required at client browser to execute applet
30. A ____ is the abstract foundation class for SWING`s non-menu user interface controls?
A . Container
B . Jcomponent
C . Component
D . Panel
31. A ____ is the basic class for all SWING UI components?
A . Container
B . Jcomponent
C . Component
D . JPanel
32. An ____ is a change in the state of an item?
A . Spinner
B . Event
C . Occurrence
D . Activity
33. Which of the following function is used to generate the application`s top-level window?
A . JPanel
B . JFrame
C . JCombo
D . JWindow
34. ____ is a container for other components and is used to build bespoke panels for organizing and arranging components?
A . JPanel
B . JFrame
C . JCombo
D . JBox
35. Which of the following component gives a drop-down list of options from which to choose?
A . JPanel
B . JButton
C . JComboBox
D . JBox
36. The ____ class serves as the foundation for all Swing components.
A . JButton
B . JComponent
C . JTextField
D . JPanel
37. In _____________the components are platform independent?
A . AWT
B . Swing
C . Both
D . None of the above
38. An ____ is a java program that runs in a web browser.
A . Application
B . AWT
C . Applet
D . JFrame
39. A ____ is a Swing framework component that offers a scroll bar that may be used to scroll content in a container.
A . JScrollPanel
B . JScrollBox
C . JScroll
D . JScrollBar
40. The ____ function allows you to paint with a Graphics object.
A . AllPaint()
B . Jpaint()
C . Repaint()
D . paint()
41. Which applet java.awt.component class provides the life cycle method?
A . public void paint(Graphics g)
B . public void destroy()
C . public void stop()
D . public void init()
42. What invokes immediately after the start() method and also any time the applet needs to repaint itself in the browser?
A . a.stop()
B . b. init()
C . c. paint()
D . d. destroy()
43. What is used to run an Applet?
A . An html file
B . An AppletViewer tool(for testing purpose)
C . Both A & B
D . None of the above
44. When an applet is terminated which of the following sequence of methods calls take place?
A . stop(),paint(),destroy()
B . destroy(),stop(),paint()
C . destroy(),stop()
D . stop(),destroy()
Fill in the Blanks
45. Is Applet and Application both are same in the swing framework?(Yes/No)________________
46. Applet works at client side so less response time.(True / False)?
47.The APPLET tag is used to start an applet from both an HTML document and from an applet viewer(True/False)?
48. All Applets must import java.applet and java.awt.(True/False)?
49. The APPLET tag is used to start an applet from both an HTML document and from an applet viewer(True/False)?
50. Applet runs inside the browser and does not work at client side(True/False)?
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☞ Object Oriented Programming through Java MCQs - Unit-1 - [ OOP_JAVA ]
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