Short Q2

Question 1

Differentiate clearly between the mouseMotionListener and MouseListener

Answer 1

MouseListener is used when the mouse is stable while handling a event. MouseMotionListener is when the mouse is in motion

Question 2

Explain the role of each of the following:
ActionListener
ItemListener

Answer 2

ActionListener - User clicks a button, presses return while typing in a text field, or chooses a menu item.
ItemListener = ItemListener is an interface that listens for the item event, basically it refers to the item selection

Question 3

Outline the function of each of the following:
setVisible
getContentPane-

Answer 3

setVisible- we must use this method to make it appear on the screen as frames are invisible by default.
getContentPane- The getContentPane() method retrieves the content pane layer so that you can add an object to it

Question 4

Describe the function of the following:
JTextArea
JTextField

Answer 4

JTextArea - Allows uses to enter multiple lines of Text

JTextField - A text field is an area a user can type in characters

Question 5

Describe the function of the following:
JOptionPane
JScrollPane

Answer 5

JOptionPane - Create and customize several different kinds of dialog
JScrollPane - .If you want your users to be able to see content that exceeds the screen display area, you must place the component inside of a JScrollPane to support scrolling to the extra content

Question 6

Describe the role of each
SetJMenuBar
setLookAndFeel

Answer 6

SetJMenuBar - Is used to add a menu bar to a top-level contrainer such as a JFrame

SetLookAndFeel- Look” refers to the appearance of GUI widgets (more formally, JComponents ) and “feel” refers to the way the widgets behave

Question 7

Compare and contrast the following layout managers in gui:
BoxLayout
BorderLayout
GridLayout

Answer 7

Box Layout - It is the default layout in JFrame. It can position components in five different regions like top, bottom, left, right and center.

Border Layout - puts components in a square at one of the positions of North, South, East, West and center

Grid Layout - puts components in a rectangular grid

Question 8

Using java code statements declare a JComboBox called carMakeList containing Fiat,Volskwagon and Mercedes

Answer 8

string[]carMakeList = new String{"Fiat","volkswagon","Mercedes"}.
JComboBoxcarMakeList = new JComboBox <>(carMakeList);

Question 9

How to retrieve the input text entered by user in a JPasswordField components

Answer 9

passwordField = new JPasswordField(10);
passwordField.setActionCommand(OK);
passwordField.addActionListener(this);