Upcasting - Study guides, Class notes & Summaries

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 Student that extends a class called Person and we write: Person p = ......; Student s = (Student)p; Is this up casting or down casting? will it work? correct answers This is down casting. It compile...

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...

MCIT 591 Final Exam with Complete Solution 2024 What is the method signature for the main method of a Java program? - - main(String[] args) What is overloading? - - two methods that have the same name but different method signatures What is overriding? - - Declaring a method in a sub class which is already present in the parent class in order to make the method more specialized to that sub class True or False, assertEquals uses .Equals() - - True Define Upcasting - - Going to a more genera...

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 Student that extends a class called Person and we write: Person p = ......; Student s = (Student)p; Is this up casting or down casting? will it work? correct answers This is down casting. It compile...

Cmsc 132 Exam 1 Review Questions And Answers With Verified Solutions Already Passed!!!

MCIT 591 Final Exam with Complete Solution 2024 What is the method signature for the main method of a Java program? - - main(String[] args) What is overloading? - - two methods that have the same name but different method signatures What is overriding? - - Declaring a method in a sub class which is already present in the parent class in order to make the method more specialized to that sub class True or False, assertEquals uses .Equals() - - True Define Upcasting - - Going to a more genera...

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 correct answers Separates the interface from the algorithms Encapsulation correct answers Hides the algorithms and only provides the interface Abstract method correct answers All methods in an interface are abstract implicitly, unless "default" keyword In a non-interface, the class must be declared abstract "Is a" relationship correct answers Interfaces Enhanced for loop correct answers for (int index : someArray) Sysout (index); Will print out each item in so...