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

1. 1. mouseReleased()

   
   
   

   2. mouseClicked()

   
   
   

   3. mouseDragged()

   
   
   

   4. mousePressed()

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

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

---

57. Which of these methods can be used to determine the type of event?

1. 1. getSource()

   
   
   

   2. getEvent()

   
   
   

   3. getEventObject()

   
   
   

   4. getID()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   getID() can be used to determine the type of an event.

---

---

58. Event class is defined in which of these libraries?

1. 1. java.util

   
   
   

   2. java.net

   
   
   

   3. java.lang

   
   
   

   4. java.io

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   java.util

---

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

1. 1. A listener is a method that is notified when an event occurs

   
   
   

   2. A listener is a variable that is notified when an event occurs

   
   
   

   3. A listener is a object that is notified when an event occurs

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   A listener is a object that is notified when an event occurs. It has two major requirements first, it must have been registered with one or more sources to receive notification about specific event types, and secondly it must implement methods to receive and process these notifications.

---

---

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

1. 1. ActionEvent

   
   
   

   2. ItemEvent

   
   
   

   3. EventObject

   
   
   

   4. EventClass

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   EventObject class is a super class of all the events and is defined in java.util package.

---