Java: Classes and Objects
An instance method that stores its parameter into an instance variable is said to be an ________.
Mutator/Setter
A method is allowed to have _______, which represent data that will be supplied when the method is called.
Parameters
Reference variables are known as _______ variables in other programming languages.
Pointer
A mehtod that returns the contents of an object as a string should be named ______.
toString
Which method is used to remove extra space from the beginning and end of a string?
trim
What is the value of 11 + 38 + "THX"?
49THX
The words public and private are _____ _____
Access modifiers
An instance method that returns the value of an instance variable is said to be an _______.
Accessor/Getter
Objects have two properties. One is state. What is the other?
Behavior
To perform an operation on an object, we _______ one of the instance methods associated with the object.
Call
A new object that's been created by copying an existing object is said to be a _______.
Clone
The act of joining two strings together to form a single string is called _______.
Concatenation
The job of a _____ is to initialize instance variables at the time an object is created.
Constructor
An object variable doesn't actually store an object. Instead, it stores a ______ to an object.
Reference
The keyword ______ is placed before a class name in order to create an object.
new
What value can we assign to an object variable to indicate that it doesn't currently store an object?
null
How do you call an instance method
object.methodname(arguments)
Nested inside a class declaration are three kinds of declarations. What are they?
Constructor declarations Variable declarations Method declarations
An object that's no longer accessible through any object variable is said to be _______.
Garbage
An object whose instance variables cannot be changed is said to be _______.
Immutable
The behavior of an object is represented by ______ ______
Instance methods
Once a class has been declared, we can create objects that belong to the class. We say that these objects are ______ of the class.
Instances
The state of an object is stored in _____ _____
Instance variables