6.
In Java, what is the signature of the method in the WindowListener interface where code is
to be added to end a program when the close button is pressed?
(a) void windowClosed (WindowEvent we) (b) void windowAdapter (WindowEvent we) (c) void windowDeactivated (WindowEvent we) (d) void windowClosing (WindowEvent we)
Correct answer is (d)
Your score on this question is: 10.00 7.
What is the signature of the method specified in the Java ActionListener interface?
(a) void actionListener (ActionEvent ae) (b) void actionEvent (ActionPerformed ap) (c) void actionPerformed (ActionEvent ae) (d) void actionPerformed (ActionListener al)
Correct answer is (c)
Your score on this question is: 0.00 8.
Which of the following is (are) true regarding event handling in Java?
When a GUI component is created, the component automatically has the ability to generate
events during user interaction.
Each Listener object must be registered with the specific component object or objects for
which the Listener object is to respond.
(a) I only (b) II only (c) I and II (d) None
Correct answer is (c) 9.
What is the signature of the method specified in the Java ListSelectionListener interface?
(a) void actionPerformed (ListSelectionEvent lse)
(b) void ListSelectionListener (ListSelectionEvent lse) (c) void valueChanged (ListSelectionEvent lse) (d) void valueChanged (ListSelectionListener lsl)
Correct answer is (c)
Your score on this question is: 10.00
10.
The ListSelectionEvent class and ListSelectionListener interface are available in the _____
package of Java.
(a) java.event
(b) java.awt.event (c) javax.event
(d) javax.swing.event
Correct answer is (d) 8.
From within a child class, its parent class is referred to via the keyword
(a) this (b) base (c) parent (d) super
Correct answer is (d) 4.
Consider the following UML class diagram.
According to the diagram, which of the following statements is (are) true?
ClassB is a specialization of ClassA. ClassA is a generalization of ClassC.
ClassC is involved in a self-containment loop.
(a) I and III only (b) II and III only (c) I and II only (d) I, II, and III
Correct answer is (d)
Your score on this question is: 0.00 8.
Consider the following UML class diagram.
Which of the following is (are) true about the system described by the diagram?
An instance of Picture can contain a collection of instances of the class Shape. An instance of Shape can contain a collection of instances of the class Picture.
(a) I and II (b) I only (c) II only (d) None
Correct answer is (b)
Your score on this question is: 0.00
Feedback:
See section 1.2.3, subsection \
the course notes.
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