Chapter 14

Question 1

A JFrame is a descendent of

Answer 1

Component, container, and window classes

Question 2

Unlike a window, a JFrame

Answer 2

Has a title bar and border

Question 3

The statement JFrmae myFrame = new JFrame(); creates a JFrame that is

Answer 3

Invisible and has no title

Question 4

You can set a JFrame named aFrame 300x200 pixels with

Answer 4

JFrame aFrame = new JFrame(300x200)l, aFrame.setSize(300x200); and aFrame.setBounds(300, 200);

Question 5

When a user closes a JFrame, the default behavior is for

Answer 5

the JFrame to be hidden and the application to keep running

Question 6

An advantage of extending the JFrame class is

Answer 6

You can set the child class properties within the class constructor

Question 7

YOu can add a JLabel to a JFrame with

Answer 7

Frame1.add(label1);

Question 8

The arguments required by the Font constructor include

Answer 8

Typeface, style, and point size

Question 9

A class that controls component positioning in a JFrame is a

Answer 9

Layout manager

Question 10

What can a user type text data into, its data can be set in the program instead of by the user, and a program can set its attributes so that a user cannot type in it

Answer 10

A JTextField

Question 11

A parameter can be used in some JFrame constructors to set the

Answer 11

Initial text in the field

Question 12

Within an event-driven program, a component on which an event is generated is the

Answer 12

Source

Question 13

A class that will respond to button press events must use

Answer 13

Implements ActionListener in its header

Question 14

Button1.addActionListener(this);

Answer 14

Will execute an actionPerformed() method when button1 is clicked

Question 15

When you use the getSource() method with an ActionEvent object, the result is an

Answer 15

Object

Question 16

A class can implement

Answer 16

As many listeners as it needs

Question 17

When you write a method that reacts to JCheckBox changes, you name the method

Answer 17

ItemStateChanged()

Question 18

If a class contains two components that might each generate a specific event type, you can determine which componenent caused the event by using the _____ method

Answer 18

GetSource()

Question 19

To group several components such as JCheckBoxes so that a user can select only one at a time, you create a

Answer 19

ButtonGroup

Question 20

What will be selected?
TwoOptions.setSelected(box1);
TwoOptions.setSelected(box2);

Answer 20

Box2 will be selected