Exam 11: Advanced User Interfaces

What is the default layout manager of JPanel?

The code below will not compile successfully unless the argument to the makeMenuItem method is final. Why not? Public JMenuItem makeMenuItem(final String menuLabel) { JMenuItem mi = new JMenuItem(menuLabel); Class MyMenuListener implements ActionListener { Public void actionPerformed(ActionEvent

Which layout manager may change the location and size of existing components when new ones are added? I FlowLayout II BorderLayout III GridLayout

Which layout manager constructor call would be best-suited to create a telephone handset GUI which has three rows of three keys each with labels, 1,2,3,4,5,6,7,8,9, and a fourth row with labels *, 0, and #?

Which component can generate action events? I JMenuBar II JMenu III JMenuItem

Which class has constants called NORTH and SOUTH?

Consider the following code snippet: Public class MyMouseListener implements MouseListener { Public void mousePressed(MouseEvent event) { Double x; Double y; _______ System.out.println("x: " + x + ", y: " + y); } ) . . } Which of the following statements should be filled in the blank to print out where the mouse was pressed?

Suppose listener is an instance of a class that implements the MouseListener interface. How many methods does listener have?

Consider the following code snippet: Class MyListener implements ActionListener { Public void actionPerformed(ActionEvent event) { System.out.println(event); } } timer t = new Timer(interval, listener); t.start(); What is wrong with this code?

A ____ is a combination of a list and a text field.

To create a _____ layout, you supply the number of rows and columns in the constructor, then add the components, row by row, left to right.

Consider the code snippet below: Public class RectangleComponent extends JComponent { Private static final int RECTANGLE_WIDTH = 20; Private static final int RECTANGLE_HEIGHT = 30; Private int xLeft; Private int yTop; Public RectangleComponent() { xLeft = 0; yTop = 0; } Public void paintComponent(Graphics g) { g.fillRect(xLeft, yTop, RECTANGLE_WIDTH, RECTANGLE_HEIGHT); } Public void moveRectangleBy(int dx, int dy) { xLeft = xLeft + dx; yTop = yTop + dy; repaint(); } } Which statement(s) causes the rectangle to appear at an updated location?

For a new programmer using the Swing JSlider component for the first time, which of these is the least important thing to know?

Which layout manager places objects left-to-right, row by row into a fixed set of rows and columns?

What is the best way to discover the set of Swing components?

Which of the following is not a visual component?

What is known for certain from this correct code excerpt? ActionListener openListener = new FileOpenListener(); JMenuItem fileOpen = new JMenuItem("Open File"); FileOpen.addActionListener(openListener);

What is the most time-effective way to build a GUI quickly and concentrate on coding the logic of the program?

Given four JRadioButton objects in a ButtonGroup, how many radio buttons can be selected at the same time?

The Timer class is found in the ____ package.