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Getting Started 1
An Embarrassment of Riches: The Linux Environment ............ 3
What You Will Learn ........................................................................... 3
The Command Line: What’s the Big Deal? ........................................ 4
Basic Linux Concepts and Commands ............................................... 5
1.3.1 | Redirecting I/O ....................................................................... | 6 |
1.3.2 | The ls Command ................................................................... | 9 |
1.3.3 | Filenames .............................................................................. | 9 |
1.3.4 | Permissions ........................................................................... | 10 |
1.3.5 | File Copying ........................................................................... | 12 |
1.3.6 | Seeing Stars .......................................................................... | 13 |
1.3.7 | File Contents .......................................................................... | 15 |
1.3.8 | The grep Command .............................................................. | 19 |
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1.3.9 The find Command 20
1.3.10 The Shell Revisited 21
1.3.11 The tar and zip Commands 26
1.3.12 The man Command 29
1.4
1.5
1.6
Chapter 2
2.1
2.2
Review 30
What You Still Don’t Know 30
Resources 30
An Embarrassment of Riches: Editors 33
What You Will Learn 33
Eye to Eye with vi 34
2.2.1 Exiting 40
2.2.2 Search and Replace 41
2.2.3 The Joy of Regular Expressions 43
2.2.4 Starting Off Right: .exrc 44
2.3 Editors Galore 45
2.3.1 Editing Your Pipes (sed, the Stream EDitor) 47
2.3.2 Simple Graphical Editors 47
2.4
2.5
2.6
Chapter 3
3.1
3.2
Review 49
What You Still Don’t Know 49
Resources 49
An Experienced Programmer’s Introduction to Java 51
What You Will Learn 51
Fundamental Language Elements 52
3.2.1 Scalar Types 53
3.2.2 Object Types 57
3.2.3 Statements 65
3.2.4 Error Handling, Java Style 74
3.2.5 print(), println(), printf() 78
3.3 Using (and Making) Java APIs 82
3.3.1 The package Statement 82
3.3.2 The import Statement 84
3.4 Encapsulation, Inheritance, and Polymorphism 85
3.4.1 Encapsulation 85
3.4.2 Inheritance 86
3.4.3 Polymorphism 91
3.5
3.6
3.7
3.8
3.9
3.10
3.11
Chapter 4
4.1
4.2
O, Templates! Where Art Thou? ......................................................... Virtually Final ......................................................................................
A Useful Simple Application ............................................................... Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
Exercises ............................................................................................
Where Am I? Execution Context ..................................................
What You Will Learn ...........................................................................
A Simple Start .....................................................................................
93
94
95
95
97
97
98
99
100
100
4.2.1
4.2.2
Command-Line Arguments ....................................................
Unit Testing Made Easy .........................................................
100
102
4.3
The System Class ...........................................................................
102
4.3.1
4.3.2
4.3.3
Java and Standard I/O ...........................................................
Environment Variables ...........................................................
Java and Environment Variables ...........................................
102
104
105
4.4
4.5
The Properties Class .................................................................
The Runtime Class .........................................................................
109
111
4.5.1
4.5.2
exec() ................................................................................
Portability ...............................................................................
111
113
4.6
4.7
4.8
Chapter 5
5.1
5.2
5.3
Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
The Sun Microsystems Java Software Development Kit ...........
What You Will Learn ........................................................................... All You Need, and Not One Thing More ............................................. The Java Compiler .............................................................................
113
113
114
115
116
116
117
5.3.1
5.3.2
Compiler Behavior, Defaults, and Environment Variables .....
javac Options .........................................................................
117
119
5.4
The Java Runtime Engine ..................................................................
121
5.4.1
5.4.2
The Basics .............................................................................
java Options ...........................................................................
121
122
5.5
Complete, Up-to-Date Program Documentation Made Easy ..............
122
5.5.1
5.5.2
5.5.3
Running javadoc ...................................................................
Javadoc Command-Line Options ........................................... Javadoc Comments ...............................................................
123
124
128
5.6
5.7
5.8
Dispensing with Applets .....................................................................
Going Native .......................................................................................
Introducing RMI ..................................................................................
131
132
137
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
A Brief Introduction to RMI .....................................................
The rmic Tool ........................................................................
The rmiregistry Tool .............................................................
Setting Up Servers and Clients .............................................. RMI Summary ........................................................................
137
143
144
144
147
5.9
5.10
5.11
The Java Debugger ............................................................................
Return to the Source: The Java Decompiler ......................................
Bundling a Java Program: Put It in a JAR ..........................................
148
157
157
5.11.1
5.11.2
Deploying Applications ...........................................................
Basic jar Operation ................................................................
160
163
5.12
5.13
5.14
5.15
Chapter 6
6.1
6.2
The Rest of the Toolkit .......................................................................
Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
The IBM Developer Kit for Linux, Java 2 Technology Edition ...
What You Will Learn ...........................................................................
Use Linux Features to Make Multiple Java SDKs Play Nicely Together .............................................................................................
164
166
166
166
167
167
168
6.2.1
6.2.2
Links .......................................................................................
Switching Java Versions by Symlink ......................................
168
173
6.3
How the IBM JDK Differs from the Sun JDK ......................................
174
6.3.1
6.3.2
6.3.3
Performance ..........................................................................
Differences in the Commands ................................................ IBM Classes ...........................................................................
175
175
175
6.4
6.5
6.6
6.7
What Are All These “_g” Versions? .................................................... Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
176
176
177
177
Chapter 7
7.1
7.2
7.3
7.4
The GNU Compiler for Java (gcj) .................................................
What You Will Learn ...........................................................................
A Brand GNU Way .............................................................................
The GNU Compiler Collection ............................................................
Compiling Our Simple Application with gcj ........................................
179
179
179
180
181
7.4.1
7.4.2
Compiling FetchURL with gcj ................................................
Compiling a Multiclass Program ............................................
182
184
7.5
7.6
7.7
7.8
7.9
7.10
Chapter 8
8.1
8.2
Options and Switches .........................................................................
Reasons to Use gcj ............................................................................
Reasons Not to Use gcj .....................................................................
Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
Know What You Have: CVS ..........................................................
What You Will Learn ...........................................................................
Source Control: Whys and Hows ........................................................
185
186
187
187
187
188
189
190
190
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
8.2.7
8.2.8
8.2.9
8.2.10
8.2.11
Setup ......................................................................................
Import .....................................................................................
Normal Use ............................................................................
Update ...................................................................................
Merges ...................................................................................
Log .........................................................................................
cvs status ......................................................................
cvs tag ..............................................................................
Branching Tags ......................................................................
cvs export ......................................................................
A Quick Look behind the Scenes ...........................................
193
195
198
201
201
203
205
205
207
210
210
8.3
A GUI: jCVS ........................................................................................
211
8.3.1
Installing jCVS ........................................................................
211
8.4
8.5
8.6
Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
213
214
214
Chapter 9
9.1
9.2
9.3
Ant: An Introduction .....................................................................
What You Will Learn ........................................................................... The Need for a Different Build Tool ....................................................
Obtaining and Installing Ant ................................................................
215
215
216
217
9.3.1
9.3.2
Installing a Binary Tarball .......................................................
Installing a Source Tarball .....................................................
217
219
9.4
A Sample Ant Buildfile ........................................................................
220
9.4.1
9.4.2
9.4.3
XML for the Uninitiated ..........................................................
The Buildfile Tags ..................................................................
A Real, Live Buildfile ..............................................................
220
222
229
9.5
9.6
9.7
Chapter 10
10.1
10.2
Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
Integrated Development Environments ......................................
What You Will Learn ...........................................................................
NetBeans: The Open Source IDE ......................................................
232
232
232
235
236
236
10.2.1
10.2.2
10.2.3
10.2.4
10.2.5
10.2.6
A Brief History of NetBeans ...................................................
Installing NetBeans ................................................................
Getting Around in NetBeans ..................................................
Integration with CVS ..............................................................
Integration with Ant ................................................................
Other Add-on Tools ................................................................
236
237
241
245
248
250
10.3
10.4
SunONE Studio Community Edition ...................................................
Eclipse: The Source of SWT ..............................................................
251
251
10.4.1
10.4.2
10.4.3
10.4.4
Selecting and Installing Eclipse .............................................
Using Eclipse for a New Project .............................................
Using Eclipse for an Existing Project ..................................... Working with Eclipse ..............................................................
251
254
256
257
10.5
10.6
10.7
Review ................................................................................................ What You Still Don’t Know ..................................................................
Resources ..........................................................................................
258
259
259
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