Java Gently for Engineers and Scientists

Judith M Bishop Department of Computer Science University of Pretoria

Nigel T Bishop Department of Mathematics, Applied Mathematics and Astronomy University of South Africa

An imprint of Pearson Education Harlow, England • London • New York • Reading, Massachusetts • San Francisco Toronto • Don Mills, Ontario • Sydney • Tokyo • Singapore • Hong Kong • Seoul Taipei • Cape Town • Madrid • Mexico City • Amsterdam • Munich • Paris • Milan

Contents

Chapter 1

Chapter 2

Chapter 3

Example programs and Case studies Preface

Introduction

1.1 Welcome to Java 1.2 Software development 1.3 Scientific Computing 1.4 Getting started with Java 1.5 The web site Quiz

Simple programs 2.1 Two Starter programs 2.2 Java basics 2.3 Beginning with Output 2.4 Expressions and assignment 2.5 Numerical Computing Quiz Problems

Structuring 3.1 Properties of a good program 3.2 Repetition with for-loops 3.3 Input and Output on a display 3.4 Making methods 3.5 The Graph class 3.6 Numerical methods with for-loops Quiz Problems

xi xiii

1 1 5 9

13 17 17

19 19 22 27 30 37 48 49

51 51 53 62 68 77 81 94 95

viii Contents

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Controlling 4.1 Files for input and Output 4.2 The types b o o l e a n and c h a r 4.3 Selection with i f - e 1 s e and swi t c h 4.4 Conditional loops with whi 1 e and do 4.5 Handling exceptions 4.6 Arithmetic accuracy 4.7 Numerical methods with while-loops Quiz Problems

Arrays and matrices 5.1 Simple arrays 5.2 Matrices 5.3 Numerical methods - linear curve fitting 5.4 Numerical methods - solving linear equations 5.5 Case study 1: Linear boundary value problem Quiz Problems

Abstraction 6.1 Class power 6.2 Class-independent tables 6.3 Abstract methods and classes 6.4 Working within a hierarchy 6.5 Numerical methods with abstraction 6.6 Case study 2: Process control Quiz Problems

Customizing 7.1 Introduction to the awt 7.2 Laying out a GUI 7.3 Events, listeners and handlers 7.4 Inside the Graph class

99 99

106 111 116 121 126 133 138 139

143 143 156 161 167 175 181 182

185 185 190 196 206 216 231 238 239

243 243 253 261 267

Chapter 8

Chapter 9

/

Quiz Problems

Networking 8.1 From applications to applets 8.2 Connecting via the Internet 8.3 Sound and images 8.4 Animation through threads 8.5 Case study 3: The Planets Project Quiz Problems

Distributing 9.1 Formalities of threads 9.2 Inside the D i s p l a y class 9.3 Ports and sockets 9.4 Case study 4: The chatter System 9.5 Case Study 5: The nuclear reactor Quiz Problems

Chapter 10 Additional topics

Answers to

10.1 Strings and string handling 10.2 Inside the Tex t class

Contents ix

278 278

281 281 290 295 300 311 323 324

325 325 332 339 345 350 368 369

371 371 376

10.3 Formatting with the j a v a . t e x t package 382 10.4 Dates, calendars and times 10.5 Lists of objects 10.6 Other object properties 10.7 Interfaces for generality Quiz Problems

quizzes

387 392 398 401 409 409

413

Index 422