JAVA homework. _____ provides the basic attributes and behaviors of a window\'s

Question

JAVA homework.

_____ provides the basic attributes and behaviors of a window's title bar: a title bar at the top of the window, and buttons to minimize, maximize and close the window.

Select one:

JLabel.

JSwing.

JFrame.

JWindowControl.

Question 2

A JLabel can be attached to a JPanel (or JFrame) using method ________.

Select one:

append

add

attach

contain

Question 3

Which methods retrieve and set the image that's displayed in a JLabel?

Select one:

getResource, setResource.

getText, setText.

getImageIcon, setImageIcon.

getIcon, setIcon.

Question 4

Which JFrame constant indicates that the program should terminate when the window is closed by the user?

Select one:

TERMINATE_ON_CLOSE.

IMMEDIATELY_CLOSE.

EXIT_ON_CLOSE.

All of the above.

Question 5

Question text

Forgetting to register an event-listener object for a particular GUI component causes         .

Select one:

events generated only by that component to be ignored.

all of the GUI component's events to be ignored.

a compilation error.

None of the above.

Question 6

The GUI event with which the user interacts is the _____.

Select one:

event source.

event effector.

event raiser.

event container.

Question 7

Which of the following statements for a JTextField are true? Select all that apply.

Select one or more:

Enables users to enter data from the keyboard.

Can display a multi-line list.

Can be used to display uneditable text.

Can be used to display editable text.

Question 8

Which of the following statements makes the text in a JTextField uneditable?

Select one:

textField.setUneditable(true);

textField.setUneditable(false);

textField.setEditable(false);

textField.setEditable(true);

Explanation / Answer

Question1:

Ans : JFrame

Explanation : JFrame class has some contants (ex : JFrame.EXIT_ON_CLOSE) and some funtions to controll the functionality of title bara and close and minimize buttons

Question2:

Ans : add

Explanation : JPanel.add() method is used to add the any components to the panel.

Question3:

Ans : getIcon, setIcon.

JLabel.setIcon() and JLabel.getIcon() can be used to set and get the icons for JLabel

Question4:

Ans : EXIT_ON_CLOSE

Explanation : frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

after using the above line .. clicking on "close" button exits the applications

Question5:

Ans : events generated only by that component to be ignored.

Explanation : Every component will be registered with diffrent event listener...so event from only that commponent will be ignored

Question6:

Ans : event source.

Explanation : In java every event occurs on ource Object. It consists of all the information about the occurred event

Question7:

Ans (i) :Enables users to enter data from the keyboard.

(ii) Can be used to display uneditable text.

(iii) Can be used to display editable text.

Question8:

Ans : textField.setEditable(false);

Explanation: setEditable(false) will make the text field uneditable

setEditable(true) will make them editable.

textField.setUneditable(true) and textField.setUneditable(false) are NOT valid functions

Related Questions

Navigate

• Browse (All)
• Browse J
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.