Java constructors - Study guides, Revision notes & Summaries

1.1 The structure of a Java class and source code file: correct answersThe OCA Java SE 8 Programmer I exam covers the structure and components of a Java class and Java source code file (.java file). It doesn't cover the structure and components of Java bytecode files (.class files). 1.1 The structure of a Java class and source code file: correct answersA class can define multiple components. All the Java components you've heard of can be defined within a Java class: import and package stat...

What is the key difference between a static variable and a global variable? A) They come from different parts of memory, or B) They have different visibility. correct answer: B What operations will acquire memory from heap? (declaration, free, malloc, new) correct answer: malloc, new If a function calls another function, the local variables in these two functions use the memory from (different, the same) stack frame(s). correct answer: different What is the best way to delete an arra...

CSE 240 final Questions and Answers 100% Correct | Graded A+ What is the key difference between a static variable and a global variable? A) They come from different parts of memory, or B) They have different visibility. - B What operations will acquire memory from heap? (declaration, free, malloc, new) - malloc, new If a function calls another function, the local variables in these two functions use the memory from (different, the same) stack frame(s). - different What is the best way t...

Package statement Import statements Comments Class declaration { Variables Comments Constructors Methods Nested classes Nested interfaces Enum } correct answersStructure of a Java class public final class Runner extends Person implements Athlete {} correct answersComponents of a class declaration using an example - Per Java naming conventions, package names should all be in lowercase. - The package and subpackage names are separated using a dot (.). - Package names foll...

Encapsulation - a fundamental principle of object-oriented programming, whereby the internal components of a class are hidden from external classes and are only accessed via getter / setter methods. Why use encapsulation? - so that you can change the internal implementation of a class without affecting other classes. instantiation - Process of creating an object, an instance of a class; creates space in memory for the new object and binds a name for the object with the object's data in me...

A) In Java SE 8, an interface may declare default methods-that is, public methods with concrete implementations that specify how an operation should be performed. B) When a class implements an interface, the class receives the interface's default concrete implementations if it does not override them. C) When you enhance an existing interface with default methods-any class that implemented the original interface will break. D) With default methods, you can declare common method implementation...

OOAD EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED/ Inheritance should be used more than composition to create more flexible classes - -False - inheritance requires more testing to ensure desired behavior. Also, not possible to cleanly remove inherited methods that are not needed. The relationship of a subclass to it's parent class. Or, the usual way to describe a subclass. - -is-a. Why use UML during analysis? - -Because UML is a visual representation which is easier to get ...

Strings are_____ - correct answer immutable immutable definition - correct answer The character contents can no longer be changed. == - correct answer compares instance(address of the object) equals - correct answer compares content of String Objects equalsignoreCase - correct answer ...

True/False: In order to run a static method, you must run it for a particular object (the current object). correct answers False True/False: In order to run an instance method, you must run it for a particular object (the current object). correct answers True True/False: An instance variable can be declared as "static". correct answers False True/False: The same class can contain some members that are static and some members that are non-static. correct answers True Which kinds of ...

PRN 292 Full Test Bank | Questions with complete solutions Unlike const however, read-only fields are NOT______ A. explicitly internal B. explicitly static C. implicitly static D. implicitly internal What can be signature of an application's entry point? A. public static void Main(string s){} B. public static void main() {} C. public static void Main() {} D. public static void Main(int n) {} Web service technology is based on? A. SOAP and TCP/IP B. TCP/IP and UDP C. UDP and XML D. XML and SOA...