Java MCQs with answers Page - 31

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Q. Which of the following creates a List with 5 visible items and multiple selections enabled?

  • (A) new List(5, true)
  • (B) new List(true, 5)
  • (C) new List(5, false)
  • (D) new List(false, 5)

A

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Q. 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();

A

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Q. How do you change the current layout manager for a container?

  • (A) Use the setLayout method.
  • (B) Once created you cannot change the current layout manager of a component
  • (C) Use the setLayoutManager meth
  • (D) None of the above

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Q. Which of the following methods can be used to draw the outline of a square within a JAVA.awt.Component object?

  • (A) drawLine()
  • (B) fillRect()
  • (C) drawPolygon()
  • (D) None of the above

A

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Q. State true or false
(i) JPanel is a class included in awt package
(ii) Anonymous classes are mostly used for event handling
(iii) Names of anonymous classes must be unique
(iv) JOptionPane is an inner class

  • (A) i-false, ii-false, iii-true, iv-true
  • (B) i-true, ii-false, iii-true, iv-false
  • (C) i-false, ii-true, iii-false, iv-false
  • (D) i-true, ii-true, iii-false, iv-true

A

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Q. State true or false
(i) Java RMI supports distributed objects written entirely in java
(ii) Java RMI makes use of stubs and skeleton
(iii) In Java RMI an object registers itself with a media server
(iv) IDL is interface declaration language

  • (A) True, True, False, False
  • (B) False, True, True, True
  • (C) True, False, True, False
  • (D) True, True, True, True

A

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Q. State true or false
(i) public can only be assigned to class (ii) protected protects a statement
(iii) protected method is never accessible outside the package
(iv) friendly variable may be accessible outside class

  • (A) True, True, False, True
  • (B) False, False, False, True
  • (C) False, True, False, False
  • (D) True, False, False, False

A

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Q. The ________ method help in clearing the contents of the buffer:

  • (A) flush()
  • (B) clear()
  • (C) rub()
  • (D) vanish()

A

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Q. Which of these methods are used to register a MouseMotionListener?

  • (A) addMouse()
  • (B) addMouseListener()
  • (C) addMouseMotionListner()
  • (D) eventMouseMotionListener()

A

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Q. What is a listener in context to event handling?

  • (A) A listener is a variable that is notified when an event occurs.
  • (B) A listener is an interface that is notified when an event occurs.
  • (C) A listener is a method that is notified when an event occurs.
  • (D) None of the mentioned

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