A Guide To Programming In Java – Final Exam

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Array
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A structure that can store many of the same type of data
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Out Of Bounds Exception
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Exception thrown when an invalid index is used
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Autoboxing
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A primitive is automatically converted to a wrapper class object
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Auto-unboxing
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The process in which a primitive is automatically extracted from a wrapper class object
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Collection
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A group of related elements that are stored together as a single unit
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Collections Framework
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Classes for implementing collections
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Dynamic Array
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An array that varies in size at run time
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Element
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A data item in an array
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Generics
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Used for communicating to the computer the type of data stored in an arraylist
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Index
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The value associated with an element in an array
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Linear Search
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An algorithm for searching an array in which each element of the array is checked one after the other
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Traversing
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Iterating through element of an array
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Type Parameter
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The part of an array list statement that informs the compiler of what type of objects the arraylist can contain ()
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Unicode
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The sixteen bit digital code used to represent every letter and symbol
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ArrayList
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A java.util class with methods for implementing a dynamic array
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Double
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A java.lang class for wrapping double values in an objectq
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for
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A statement that can be used to traverse an array
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Integer
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A java.lang class for wrapping int values in an object
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[]
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the operators for accessing an array element
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String
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A java.lang class with methods for convering a string to a set of characters of for inspecting individual characters of a string
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Accessor Method
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A method of a class that is used to determine the value of a variable number
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Behavior
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The action and communication an object provides
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Class
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A data type that defines variables for the state of an object and methods for an object’s behavior
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Classbody
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The variables, constructors, and methods that implement a class
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ClassCastException
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An exception thrown when an object variable is cast with an incompatible class
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Class declaration
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The first line of a class, which contains the access level and other important information
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Class method
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A method of a class that can be called from the class itself
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Class variable
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A variable of a class that exists as one copy that all instances of a class refer to
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Client code
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An application that uses one or more classes
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Constructor
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The part of a class that is used to initialize the variable members of a class
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Encapsulation
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Protecting an object’s data
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Has-a relationship
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Demonstrated by a class that contains another class
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Helper method
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A method of a class that is used by other methods in a class to help complete a task
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Information hiding
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AKA Encapsulation
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Inherit
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To receive the methods of a superclass
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Instance
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An object of a class
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Instance Method
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A method of a class that changes the state of a class
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Member
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A variable or method of a class
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Message
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Information passed from one object to another
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Modifier method
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A method of a class that is used to change the value of a variable member
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Modular
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An application that uses components that are separately written and maintained
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Object
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An instance of a class
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Object Casting
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To cast and object as the appropriate class
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Object oriented development
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The solution to the task that is implemented as a system of objects
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Override
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To redefine a method from a superclass in a subclass
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Reusability
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A feature of object-oriented programming that reduces development time and decreases the likelihood of bugs
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State
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The data an object stores
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Subclass
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A class below another class in a class hierarchy
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Superclass
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The upper-most class in a class hierarchy
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Visibility
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The access level of a method
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public
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An access modifier used to declare a class that is visible to the client code
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private
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An access modifier used to declare class members visible to the class but not the client code
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static
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The keyword used in the declaration of a variable or method in a class to indicate that the member is a class method

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