Superclass Study guides, Study notes & Summaries

To override a superclass method in a subclass, the subclass method ____. A. Must use a different method name. B. Must use the same method name and the same parameter types. C. Must use a different method name and the same parameter types. D. Must use a different method name and different parameter types. CORRECT ANSWER B. must use the same method name and the same parameter types public interface Sizable { int LARGE_CHANGE = 100; void changeSize(); } Which of the following indicate...

How are data transforms generally used? - Answer- Generally used to map data from a source to a target as well as performing transformations on that data required to achieve the intended mapped results. What is the data transform pyDefault? - Answer- Created for new cases, allows you to set properties as the case is created If properties are set in both the superclass and subclass, what happens? - Answer- The data transform in the subclass overwrites anything already sey by the data transf...

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 a superclass object - constructor automatically calls its superclass's default constructor (error if it doesn't have one) - can explicitly invoke its superclass constructor using super - executi...

A call to a final method can only be resolved at run time - False A final method in a superclass cannot be overridden in a subclass - True A method declared as private in the superclass can be overridden in the subclass - False A static method in a superclass can be overridden in the subclass - False ENUM type is value type - False - Enum type is reference type A subclass can inherit (extends) from a final class. - F

The process of inheritance should establish a(n) ___________________ relationship. a) is-a b) has-a c) static d) not-a e) none of the above - correct answer (A.) (is-a) Inheritance should establish an is-a relationship. Therefore any objects that are of a type lower in the inheritance hierarchy are also of a type higher in the inheritance hierarchy. The original class that is used to derive a new class using inheritance is called ____________________ . a) a superclass b) a par...

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 Overloading correct answers Having multiple methods with same name but different signatures in a class Overriding correct answers Overrides the functionality of an existing method but not if it is...

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 implementation details while providing interface (methods) for data access allows us to use code without knowing its implementation makes debugging and code modification simple Interface correct answers S...

INSY 3300 - Final EXAM (T and F and MC) (75 Questions) 100% Correct When working with a sequential access file, you can jump directly to any piece of data in the file without reading the data that comes before it. F When you open a file that file already exists on the disk using the 'w' mode, the contents of the existing file will be erased. T The process of opening a file is only necessary with input files. Output files are automatically opened when data is written to them. F When an inpu...

Each object of a class has its own copy of each non-static member variable. - True Instance methods may access local variables of static methods. - False All methods in a class are implicitly passed a 'this' parameter when called. - False A static method can call other non-static methods in the same class by using the 'this' keyword. - False A class may contain both static and non-static variables and both static and non-static methods. - True It is possible for two classes to be the ...

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