Java in easy steps

by Mike McGrath

Overview

Java in easy steps, 7th edition instructs you how to easily create your own Java programs. The book contains separate chapters on the major features of the Java language. Complete example programs with colorized code illustrate each important aspect of Java programming – all in easy steps.

This book assumes no previous knowledge of any programming language so it's ideal for the newcomer to computer programming. Each chapter builds your knowledge of Java. By the end of this book you will have gained a sound understanding of the Java language and be able to write your own Java programs and compile them into executable files that can be run on any Java-enabled device.

This 7th edition of Java in easy steps covers the many exciting features of Java, including:

How to quickly run statements in the interactive shell named jshell – similar to the Python interpreter.

How to make programs with the javac compiler and execute them with the java runtime.

How to produce interactive Windows apps that can be easily distributed as jar program bundles.

How to create mobile device apps using Java functionality within the Android operating system.

All examples illustrated in the book work in Oracle JDK and OpenJDK.

Product Details

ISBN-13:	9781840788730
Publisher:	In Easy Steps Limited
Publication date:	08/25/2019
Series:	In Easy Steps
Edition description:	7th ed.
Pages:	192
Product dimensions:	7.20(w) x 8.80(h) x 0.50(d)

About the Author

Mike McGrath gained his extensive knowledge of computer languages while working as a developer contracting to companies around the world. Mike is an established In Easy Steps author with several guides to his credit.

Table of Contents

1 Getting started 7

Introduction 8

Installing the JDK 10

Writing a first Java program 12

Compiling & running programs 14

Creating a variable 16

Recognizing data types 18

Creating constants 20

Adding comments 21

Troubleshooting problems 22

Summary 24

2 Performing operations 25

Doing arithmetic 26

Assigning values 28

Comparing values 30

Assessing logic 32

Examining conditions 34

Setting precedence 36

Escaping literals 38

Working with bits 40

Summary 42

3 Making statements 43

Branching with if 44

Branching alternatives 46

Switching branches 48

Looping for 50

Looping while true 52

Doing do-while loops 54

Breaking out of loops 56

Returning control 58

Summary 60

4 Directing values 61

Casting type values 62

Creating variable arrays 64

Passing an argument 66

Passing multiple arguments 68

Looping through elements 70

Changing element values 72

Adding array dimensions 74

Catching exceptions 76

Summary 78

5 Manipulating data 79

Exploring Java classes 80

Doing mathematics 82

Rounding numbers 84

Generating random numbers 86

Managing strings 88

Comparing strings 90

Searching strings 92

Manipulating characters 94

Summary 96

6 Creating classes 97

Forming multiple methods 98

Understanding program scope 100

Forming multiple classes 102

Extending an existing class 104

Creating an object class 106

Producing an object instance 108

Encapsulating properties 110

Constructing object values 112

Summary 114

7 Importing functions 115

Handling files 116

Reading console input 118

Reading files 120

Writing files 122

Sorting array elements 124

Making array lists 126

Managing dates 128

Formatting numbers 130

Summary 132

8 Building interfaces 133

Creating a window 134

Adding push buttons 136

Adding labels 138

Adding text fields 140

Adding item selectors 142

Adding radio buttons 144

Arranging components 146

Changing appearance 148

Summary 150

9 Recognizing events 151

Listening for events 152

Generating events 153

Handling button events 154

Handling item events 156

Reacting to keyboard events 158

Responding to mouse events 160

Announcing messages 162

Requesting input 164

Summary 166

10 Deploying programs 167

Producing an application 168

Distributing programs 170

Building Java archives 172

Deploying applications 173

Creating Android projects 174

Exploring project files 176

Adding resources & controls 178

Inserting Java code 180

Testing the application 182

Deploying Android apps 184

Summary 186

Index 187