Need help with java homework. 1. What is the name for a method that responds to
ID: 3734475 • Letter: N
Question
Need help with java homework.
1. What is the name for a method that responds to events?
A. Call by Parameter
B. Call by Object
C. Call by Value
D. All of the above
2. What is the name for a method that responds to events?
A. A container method
B. A listener method
C. An application method
D. A snoop method
3. The following is a definition of an abstract class Book using Java.
abstract class Book {
String title;
abstract void setTitle(String s);
String getTitle() {
return title;
}
}
What occurs when the following line of code is compiled?
Book novel = new Book();
A. A new Book is instantiated
B. A compiler warning
C. A compiler error
D. Nothing
4. Fill in the blanks so that this program displays a Java GUI frame:
public class MyFrame {
public static void main ( String [] args ) {
JFrame frame = new _________( “My JFrame” );
frame.___________( 150, 150 );
frame.___________( true );
}
}
A. JFrame, setVisible, setSize
B. JWindow, setSize, paint
C. JForm, setVisible, setOn
D. JFrame, setSize, setVisible
Explanation / Answer
1. Answer is D : All of the above. All are valid
2.B - listener method
3.C - We can not create an object of abstract class
4. The correct answer is D