What is the highest-level event class of the event-delegation model?
The java.util.EventObject class is the highest-level class in the event-delegation class hierarchy. Read more »
Archive for May, 2007
Is a class a subclass of itself?
Yes, a class is a subclass of itself. Read more »
What modifiers may be used with an interface declaration?
An interface may be declared as public or abstract. Read more »
What is the relationship between an event-listener interface and an event-adapter class?
An event-listener interface defines the methods that must be implemented by an event handler for a particular kind of event. An event adapter provides a default... Read more »
Is “abc” a primitive value?
The String literal “abc” is not a primitive value. It is a String object. Read more »
What is the relationship between clipping and repainting?
When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that requires repainting. Read more »
Which class should you use to obtain design information about an object?
The Class class is used to obtain information about an object’s design. Read more »
Name the eight primitive Java types.
The eight primitive types are byte, char, short, int, long, float, double, and boolean. Read more »
Is &&= a valid Java operator?
No, it is not. Read more »
How are the elements of a CardLayout organized?
The elements of a CardLayout are stacked, one on top of the other, like a deck of cards. Read more »
Which TextComponent method is used to set a TextComponent to the read-only state?
setEditable() Read more »
What is the purpose of the System class?
The purpose of the System class is to provide access to system resources. Read more »
For which statements does it make sense to use a label?
The only statements for which it makes sense to use a label are those statements that can enclose a break or continue statement. Read more »
Does a class inherit the constructors of its superclass?
A class does not inherit constructors from any of its super classes. Read more »
What is the Map interface?
The Map interface replaces the JDK 1.1 Dictionary class and is used associate keys with values.99. Read more »