Question 1 Java GUI classes fall into three catagories, Container Classes, Compo

Question

Question 1

Java GUI classes fall into three catagories, Container Classes, Component Classes and Helper Classes.

True

False

2 points

Question 2

The following code is correct for creating an OK button:

JButton jbrOK = new JButton(“OK”);

True

False

2 points

Question 3

An Event is a signal to the program that something has happened, triggered by an external action such as a user click a button, but never triggered by something internal to the computer system.

True

False

2 points

Question 4

A source object is what generates or fires an event, e.g. a JButton.

True

False

2 points

Question 5

The way event driven programming works in Java is that a listener object fires an event, and a source object handles the event.

True

False

2 points

Question 6

A Font or a Color class falls into the ____________ catagory.

Container Class

Componet Class

Helper Class

Scoobie Class

2 points

Question 7

Java’s container hold components. You give a container a __________ to arrange those components automatically.

Component Manager

Layout Manager

Fund Manager

Container Manager

2 points

Question 8

______________ is the name of a Layout Manager

FlowLayout

GridLayout

BorderLayout

All the above

None of the above

2 points

Question 9

Java uses a ____________ for event handling.

scale model

JDK model

delegation-based model

RGB Model

2 points

Question 10

Listener classes are normally implemented using __________________

Ordinary classes

No classes at all

Inner classes

anonymous inner classes

Container Class

Componet Class

Helper Class

Scoobie Class

Explanation / Answer

Question 1:

Answer: True

Question 2:

Answer:True

Question 3:

Answer: True

Question 4:

Answer: True

Question 5:

Answer:False

Source object fires an event and listener object will handle it

Question 6:

Answer:Componet Class

Question 7:

Answer:Layout Manager

Question 8:

Answer:All the above

Question 9:

Answer:delegation-based model

Question 10:

Answer:Inner classes

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