Your CS1 Quiz 1 Preparation Tasklist

Textbook "An Introduction to OOP with Java"- C. Thomas Wu - Chapters 0, 1, 2, 3, 4.1,4.2 and 4.3
Introduction to Object-Oriented Programming (OOP)

Terminology - You should be able to define:

Object
Class
Differentiate between object and class
Identity
State
Property
Attribute
Behavior
Variables (instance variable versus class variable)
Constant
Method (instance method versus class method)
Operation
Invoking, Invocation

Benefits of Object-Oriented Programming (Know what these things mean)

Information Hiding/Data Abstraction
Modularity
Reuse
Class Hierarchy (Superclass, subclass)
Inheritance

What are the four basic types of methods?
How is invoking a method on an object similar to sending a message among people?
What do the public and private access levels mean?

Basic Java

Terminology

Syntax
Semantics
Identifier (Java rules/our Java Coding Standard for identifiers)
Unicode
Literals
Cast
Assignment
Instantiation (and the role of "new")

Java Comments

// (Single line)
/* */ (Multiple line)
/** */ (Javadoc)

Primitive Types

What are the primitive types in Java?
How do they differ from reference types (objects) with respect to declaration and memory allocation?
Be able to draw memory diagrams for primitive types and objects (upon declaration, assignment, instantiation) see page 88, 89, 90 for e.g.
How are unprintable char's represented in Java code?
How are literals represented for float's, long's, etc.?

Constants

What is the modifier that means an identifier is a constant in Java?
Be able to write java code to declare/define a constant.
What does our Java Coding Standard dictate about identifiers for constants?

Variables

How are variables declared in Java?
What does our Java Coding Standard dictate about identifiers for variables?
Why do we need to instantiate reference variables (objects)?
When do we need to instantiate reference variables (objects) in Java?
How do we instantiate reference variables (objects) in Java?

Expressions

What four things affect how expressions are evaluated/stored in assignment statements?

Operator Precedence - know the precedence among casting, parentheses, arithmetic (* / % + - ++ --), assignment (= += -=)
Numberic Promotion -

How are mixed-mode expressions evaluated in Java?
Why is Java automatically able to promote a byte value to short, int, or long, etc.?

Assignment Conversion - Why is Java automatically able to promote a byte value to short, int, or long, etc. for assignment?
Casting Conversion - Why is casting necessary to assign a double value to an int, etc.?

Be able to evaluate expressions keeping these four things in mind?

Assignment

What must be on the left hand side of an assignment statement?
Be able to tell whether or not an assignment statement is legal in java and be able to tell why not, if it isn't!

Java Program Structure

We are writing applications using Java. What does an application in Java look like? ( Template of a program in Java).
What is the syntax of for class declaration in a Java?
What is the syntax of the main class method declaration statement in a Java application?
What is the main class method used for in a Java application? What does it represent?

Invoking Methods

What is the Java syntax for invoking a method?
What does the dot (.) mean?
Where can you find out what information an object's method needs to do its work in Java, i.e., where can you find out which arguments you must provide?

Ankur M. Teredesai
Questions? amt@cs.rit.edu