When you create a useful, extendable superclass, you and other future programmers gain what advantages?
What will be an ideal response?
Subclass creators save development time because much of the code needed for the class has already been written. Subclass creators save testing time because the superclass code has already been tested and probably used in a variety of situations. In other words, the superclass code is reliable. Programmers who create or use new subclasses already understand how the superclass works, so the time it takes to learn the new class features is reduced. When you create a new subclass in Java, neither the superclass source code nor the superclass bytecode is changed. The superclass maintains its integrity.
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Add another global variable for the player, called a hand. Make the hand initially empty. Change the description so that there is a “key” in the Living Room. If the player types the command key while in the Living Room, the key gets put in the hand. Now, if the player has the key when entering the Kitchen, the stairs become accessible, allowing the player to go “west” and up the stairs. You will have to add some rooms to the game to make this work.
Note: The rooms the question refers to are the stairs and some room for the stairs to lead up to. Below are the methods that need to be changed for this question, with the addition of the hand variable at the file level as well.
The getElementsByName() method always returns an array.
Answer the following statement true (T) or false (F)
The WordArt text styles and effects include ____.
A. fonts B. glows C. sepias D. bubbles
In a recent survey of Android apps, more than 72 percent of the examined apps requested permissions that appeared to be outside of their operational requirements.
Answer the following statement true (T) or false (F)