Java For Everyone: Compatible with Java 5, 6, and 7, 2nd Edition

CHAPTER 2

FUNDAMENTAL DATA TYPES

CHAPTER GOALS

To declare and initialize variables and constants

To understand the properties and limitations of integers and floating-point numbers

To appreciate the importance of comments and good code layout

To write arithmetic expressions and assignment statements

To create programs that read and process inputs, and display the results

To learn how to use the Java String type

CHAPTER CONTENTS

2.1 VARIABLES

Syntax 2.1: Variable Declaration

Syntax 2.2: Assignment

Syntax 2.3: Constant declaration

Common Error 2.1: Using undeclared or uninitialized Variables

Programming Tip 2.1: Choose descriptive Variable names

Common Error 2.2: Overflow

Common Error 2.3: Roundoff Errors

Programming Tip 2.2: DO not use Magic numbers

Special Topic 2.1: Numeric Types in Java

Special Topic 2.2: Big numbers

2.2 ARITHMETIC

Syntax 2.4: Cast

Common Error 2.4: Unintended Integer Division

Common Error 2.5: Unbalanced Parentheses

Programming Tip 2.3: Spaces in Expressions

Special Topic 2.3: Combining Assignment and Arithmetic

Video Example 2.1: using Integer division

Random Fact 2.1: The Pentium Floating-Point Bug

2.3 INPUT AND OUTPUT

Syntax 2.5: Input Statement

Programming Tip 2.4: use the API documentation

How To 2.1: Carrying out Computations

Worked Example 2.1: Computing ...