CMSC132 (100% Accurate Answers)

Classes can only extend more than one other class if at least one of those classes is an abstract class. correct answers False - a Class can never extend more than one class. Downcasting can be done implicitly. correct answers False - it must be done explicitly or your code will not compile. ...

What is the only time that data from your program exists? correct answers When the program is actually running All parameters in Java are passed by _________ correct answers Value When does a parameter come into existence? correct answers When the method is called When do types come into ex...

Subclasses correct answers - inherits all properties, behaviors, and fields of its superclass - inherits private fields and methods in its superclasses, but it cannot directly access them - can have more methods than its superclass - classes can only extend one superclass - subclass is a type of...

Abstraction provides correct answers high level model of activity Procedural abstraction correct answers Specifies actions performed hides algorithms Data abstraction correct answers Specifies data objects for the problem Hides implementations Encapsulation correct answers hides implement...

What is the main reason software projects fail? correct answers Complexity of projects What is the program life-cycle? correct answers Problem Specification, Program Design, Algorithms and Data Structures, Coding and Debugging, Testing and Verification, Deployment, Documentation and Support, Main...

Serializing Objects correct answers An object can be represented as a sequence of bytes that includes the objects data as well as information about the objects type and the types of data stored. Super() correct answers A method call in a sub class constructor invokes the superclass constructor ...

Interface Example: CanFlyExample public interface CanFly { public void takeOff(); public void fly(); public static final int MAX_FLIGHT_SPEED = 200; public static void displayInfoAboutHelicopters() { Sln("Helicopters are cool."); } public default void land() { Sln("...

When implementing a linked list class, the inner class representing the nodes serves as a __________ around a piece of _________ and a reference to another node. correct answers wrapper, data What does an empty linked list look like? correct answers head ---> null Use a for loop to traverse...

What does it mean for a class/object to be immutable? correct answers The state (instance variables) are set during construction but cannot be modified after that. What does it mean for a class/object to be mutable? correct answers The state is set during construction and it might be modified lat...

Lets say there is a class called Student that extends a class called Person and we write: Student s = .....; Person p = (Person)s; Is this up casting or down casting? will it work? correct answers This is upcasting and it will work without any issues. Lets say there is a class called Stude...

What does GUI stand for? correct answers Graphical User Interface Carefully describe each of the three components in the Model/View/Controller design pattern correct answers The model is the data that is being manipulated by the program, the view is the visual interface that is being displayed ac...