91. Which of these are constants defined in WindowEvent class?

1. 1. WINDOW_DEICONIFIED

   
   
   

   2. WINDOW_ACTIVATED

   
   
   

   3. WINDOW_CLOSED

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   WindowEvent class defines 7 constants – WINDOW_ACTIVATED, WINDOW_CLOSED, WINDOW_OPENED, WINDOW_DECONIFIED, WINDOW_CLOSING, WINDOW_DEACTIVATED, WINDOW_ICONIFIED.

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92. Which of these interfaces define a method itemStateChanged()?

1. 1. ContainerListener

   
   
   

   2. ItemListener

   
   
   

   3. ComponentListener

   
   
   

   4. ActionListener

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   ItemListener

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93. Which of these interfaces define four methods?

1. 1. ContainerListener

   
   
   

   2. ComponentListener

   
   
   

   3. InputListener

   
   
   

   4. ActionListener

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   ComponentListener defines four methods componentResized(), componentMoved(), componentShown() and componentHidden().

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94. Which of these interfaces define a method actionPerformed()?

1. 1. ContainerListener

   
   
   

   2. ComponentListener

   
   
   

   3. InputListener

   
   
   

   4. ActionListener

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   ActionListener defines the actionPerformed() method that is invoked when an adjustment event occurs.

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95. Which of these methods will respond when you click any button by mouse?

1. 1. mousePressed()

   
   
   

   2. mouseClicked()

   
   
   

   3. mouseEntered()

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   when we click a button, first we enter the region of button hence mouseEntered() method responds then we press the button which leads to respond from mouseClicked() and mousePressed().

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