166. Which of these is a superclass of all Adapter classes?

1. 1. ComponentEvent

   
   
   

   2. Event

   
   
   

   3. InputEvent

   
   
   

   4. Applet

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   All Adapter classes extend Applet class.

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

1. 1. mouseReleased()

   
   
   

   2. mouseClicked()

   
   
   

   3. mouseDragged()

   
   
   

   4. mousePressed()

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   The MouseMotionAdapter class defines 2 methods – mouseDragged() and mouseMoved.

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168. Which of these methods will be invoked if a character is entered?

1. 1. keyEntered()

   
   
   

   2. keyTyped()

   
   
   

   3. keyPressed()

   
   
   

   4. keyReleased()

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   keyTyped()

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169. 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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170. 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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