Java Quiz 2

Which of these packages contains all the classes and methods required for event handling in Java?

• java.awt

• java.event

• java.applet

• java.awt.event

What is an event in delegation event model used by Java programming language?

• An event is a class used for defining object, to create events

• An event is an object that describes a state change in a source

• An event is an object that describes a state change in processing

• An event is an object that describes any change by the user and system

Method are used to register a keyboard event listener.

• KeyListener()

• addKistener()

• addKeyListener()

• eventKeyboardListener()

What is a listener in context to event handling?

• A listener is a object that is notified when an event occurs

• A listener is a variable that is notified when an event occurs

• A listener is a method that is notified when an event occurs

• None of the mentioned

class Main {

 public static void main(String args[]){

   final int i;

   i = 20;

   System.out.println(i);

 }

}

• 20

• 0

• Compiler Error

• Garbage value

• Derived::show() called

• Base::show() called

• Compiler Error

• Exception

Which of these are types of multitasking?

• Process based

• Thread based

• Process and Thread based

• None of the mentioned

Thread priority in Java is?

• Integer

• Float

• double

• long