Chapter 3 Introduction to Computers Programs and Java

Chapter 3 Introduction to Computers, Programs, and Java 1

Objectives 2

What is a Computer? 3

CPU 4

Memory 5

How Data is Stored? 6

Storage Devices 7

Output Devices: Monitor 8

Monitor Resolution and Dot Pitch 9

Communication Devices 10

Programs 11

Programming Languages 12

Programming Languages 13

Programming Languages 14

Popular High-Level Languages 15

Compiling Source Code 16

Compiling Source Code 17

Operating Systems 18

Number Systems 19

Number Systems 20

Number Systems, cont. 21

Binary Numbers => Decimals 22

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Windows Calculator 24

Hexadecimals => Decimals 25

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Java’s History 33

Characteristics of Java 34

Characteristics of Java 35

Characteristics of Java 36

Characteristics of Java 37

Characteristics of Java 38

Characteristics of Java 39

Characteristics of Java 40

Characteristics of Java 41

Characteristics of Java 42

Characteristics of Java 43

Characteristics of Java 44

Characteristics of Java 45

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JDK Versions 47

JDK Editions 48

Java IDE Tools 49

A Simple Java Program 50

Creating and Editing Using Note. Pad 51

Creating and Editing Using Word. Pad 52

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Supplements on the Companion Website 54

Compiling and Running Java from the Command Window 55

Compiling and Running Java from Text. Pad 56

Compiling and Running Java from JBuilder 57

Compiling and Running Java from Net. Beans 58

Anatomy of a Java Program 59

Comments 60

Package 61

Reserved Words 62

Modifiers 63

Statements 64

Blocks 65

Classes 66

Methods 67

main Method 68

Displaying Text in a Message Dialog Box 69

The show. Message. Dialog Method 70

Two Ways to Invoke the Method 71

The exit Method 72

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