Unit 2 - Key Vocabulary

Description

Using Objects
Shannon Anderson-Rush
Flashcards by Shannon Anderson-Rush, updated more than 1 year ago
Shannon Anderson-Rush
Created by Shannon Anderson-Rush almost 8 years ago
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Question Answer
Vocabulary
Object The basic software part of an object-oriented program or an encapsulated collection of data variables and methods or an instance of a class with defined attributes.
Variable A name for a location in memory used to hold a data value.
sides = 10; This is an assignment statement because it gives or assigns a value to a variable.
Constants Are like variables, but they have the same value throughout the program. (Created with the reserve word 'final' before a declaration.
Expression A combination of operators and operands, like a mathematical expression.
Autoboxing The automatic conversion between a primitive value and a corresponding wrapper object.
Class Library A set of classes that supports the development of programs.
Method A named group of declarations and programming statements that can be invoked (executed) when needed. A method is part of a class.
Class The formal implementation, or blueprint, of an object, the model that defines the variable and methods an object will contain when instantiated.
Encapsulation The characteristic of an object that limits access to its variables and methods. All interaction with the object occurs through an interface.
Keyword A reserved word in Java.
Signature Consists of the constructor name and the parameter list.
Parameter Values that are passed into a constructor.  There are often referred to as "actual parameters".
Null A special value used to indicate that a reference is not associated with any object.
Void Methods Do not have return values and are there not called as part of an expression.
Escape Sequence Starts with a \ and have a special meaning in Java.
Autoboxing The automatic conversion that the Java compiler makes between primitive types and their corresponding object wrapper classes.
Unboxing Automatic conversion that the Java compiler makes from the wrapper class to the primitive type.
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