Comprehensive vocabulary.
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| Class | A programming unit that captures abstraction.
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| State | Properties or attributes. Used to describe objects.
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| Objects | An abstraction of a class that has state and behavior.
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| Behavior | Perform-able tasks, methods. Used to describe objects.
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| Class Heading | The line of code that names the class and defines its relationship, if any, to another class or interface(s).
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| Instance | An object of a specified class type.
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| Instance Variable | A variable that must be referenced through an instance of the class. These variables define the attributes of a particular instance and are private.
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| Field | Another term for instance variable.
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| Constant | A value that cannot be changed during program execution. Specified with the keyword final.
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| Class Variable | A variable shared by all instances of a class. It is created with the keyword static. If changed in one instance of a class, it is changed in all class instances.
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| Method | A task that an instance of a class can perform.
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| Signature | The method heading. This defines the method as public, private, or protected; lists the method name; and specifies its parameters.
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| Overloading | The idea that two or more methods (or constructors) may have the same name as long as they have different signatures.
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| Visibility Modifier | Defines how a construct can be accessed. Usually applied to a method or variable.
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| Public | Visible to all users of the class.
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| Private | Invisible to all users of the class; visible only within the class itself.
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| Protected | Visible only to the class and subclasses of the class.
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| Constructor | A method whose task is to instantiate an object by initializing the instance variables. Constructors are named for their class and have no return type.
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| Default | A value that will be used instead of a programmer-specified parameter. Often refers to a constructor that has no parameters.
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| Accessor Method | A method that returns the value stored in an instance variable.
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| Modifier Method | Also known as a mutator method. A method that changes the state of an object. Usually are void.
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| Helper Method | Private method used within a class, usually used to avoid repetition of code or to break down a complicated task.
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| Parameter | Required information passed to a method so that it may accomplish its task.
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| Formal Parameters | Parameters listed in the method signature.
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| Actual Parameters | Values supplied by the client in the parameter list of a method call.
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| Explicit Parameter | Information passed in the parameter list.
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| Implicit Parameter | The object upon which the method is called.
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| Local Variable | Variable declared within a method.
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| Client | User of a class.
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| Main Method | The method in which, in an application, where execution begins.
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| Implementation | Code that defines a construct.
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| Precondition | An assertion that specifies what must be true for a method to succeed in its task. Usually written in terms of parameters.
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| Postcondition | An assertion that specifies what will be true when a method terminates. Usually written in terms of the return value or change in state.
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| this | A keyword that refers to the implicit parameter.
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