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handling. This concise, essentials-only approach is in line with the Practical Guide series overall philosophy. The book is based on J2SE 1.4, but anyone using version 1.2 or 1.3 should have no difficulties since any 1.4 or 1.3 features have been explicitly highlighted in the text. Chapter 1 dives straight in with a simple example of a Java program. This is to give you an early feel for the language and show where we are heading. Chapters 2 and 3 cover much of the basic syntax of Java, including sequencing, branching, and looping, but leaves discussion of object-oriented topics for later. Those of you with a background in C or C++ will be able to get quickly through these chapters. Chapters 4 and 5 cover the objectoriented features of the language. Chapters 6 and 7 cover the core features of exception handling and input/output. To this point, the chapters should be read in order. The last three chapters may be regarded as optional by some instructors. Chapter 8 covers the Swing graphical user interface, which is the one application area covered in the book. Developing GUIs is more fun, and readers coming from an environment such as C will appreciate what is included for free with Java. Chapter 9 discusses collections. Finally, Chapter 10 covers the more advanced topic of threads. This chapter uses applets for some of its examples, so you should familiarize yourselves with the applet material in Chapter 8 before attempting threads. Source code, exercises, and related material can be found at the book's accompanying Web site, www.mkp.com/practical/java. Acknowledgments First I would like to thank the technical editor of the Practical Guide series, Dr. Jeff Donahoo of Baylor University, for his advice and numerous suggestions at all stages of the book's development. This is really appreciated. I would like to thank the reviewers. These include Carl Burnham; John Raley, Moonlight Systems; Lynn R. Ziegler, Saint John's University; An Lam, 3PARdata and U.C. Santa Cruz; Bill Jackson, Ensemble Studios; Dr. Lawrence (Pete) Petersen, Texas A&M University; Jonathan L. Brisbin; Christopher Marshall, JP Morgan; William Cox, Cox Consulting; Simon P. Chappell; Ryan Witcher, Modulant Solutions. All the reviewers provided considerable feedback and this has influenced the final version of the book. I would also like to thank the staff at Morgan Kaufmann, especially Karyn Johnson for her professionalism and, for giving me the opportunity to publish the book, Edward Wade, Cheri Palmer, and the rest of the production team.
Introduction 1 Simple Java Application 1 Java Tools 4 javac 4 java 5 Language Features 5 Basic Language Syntax 7 Comments 8 javadoc 8 Statements 8 Variables 9 Constants 9 Data Types 10 Integer Numbers 10 Real Numbers 11 Booleans 12 Characters 12 Strings 13 Arrays 14 Arithmetic Operations 15 Data Type Conversion 18 Flow Control 21 Conditional Statements 21 if Statement 21 if else Statement 22 else if Statement 23 Embedded Conditional Expressions 24 Switch Statement 24 Relational and Logical Operators 26 Bitwise Operators 28
Page 2 and 3: The Morgan Kaufmann Practical Guide
Page 4 and 5: Senior Editor Rick Adams Publishing
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Page 8 and 9: Switch Statement 24 Relational and
Page 10 and 11: DataOutputStream Example 95 DataInp
Page 12 and 13: Finite Applet Thread Example 161 In
Page 16 and 17: Iteration Statements 28 while Loop
Page 18 and 19: Writing to a Random Access File 99
Page 20 and 21: Appendix B Swing Events 169 Index 1
Page 22 and 23: The program consists of a class, Mu
Page 24 and 25: The second kind of development envi
Page 26 and 27: This approach means that Java progr
Page 28 and 29: 2.1 Comments Comments are included
Page 30 and 31: 2.4 Constants In Java, we identify
Page 32 and 33: The order conventions are: Address
Page 34 and 35: 2.5.4 Characters A character variab
Page 36 and 37: The value of s1 after the concat me
Page 38 and 39: OutputTable The main array, table,
Page 40 and 41: The output of the Arithmetic applic
Page 42 and 43: chapter 3 Flow Control This chapter
Page 44 and 45: 3.1.3 else if Statement We can qual
Page 46 and 47: of expression1 is not included in a
Page 48 and 49: Table 3.1: Logical operators. Opera
Page 50 and 51: 3.3.1 while Loop The syntax of a wh
Page 52 and 53: 3.3.4 break and continue Statements
Page 54 and 55: chapter 4 Classes and Objects Two f
Page 56 and 57: 4.2 Class with Methods As we have a
Page 58 and 59: Account 1 class Account { 2 int acc
Page 60 and 61: If a class does not have a construc
Page 62 and 63: The CreateEmployee application sets
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CreateAccount 1 class CreateAccount
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Circle—second version 1 public cl
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4.9 StringBuffer A StringBuffer obj
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Table 4.1: Object wrappers. Primiti
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the required level. The SavingsAcco
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We can create chains of inheritance
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Consider the following code fragmen
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intempNumber and salary, we can saf
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For example, in the code fragment I
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CheckingAccount is a subclass of th
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The syntax for assigning a class to
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Sun Microsystems also supplies pack
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Private Account 1 package bankaccou
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Note the Account class itself has p
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private class A 5.7 Inner Classes A
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chapter 6 Exceptions Java provides
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The second version of Multiply has
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could be replaced by } catch (Index
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MultiplyClass 1 public class Multip
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32 return multiply(arg1, arg2); 33
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6.6 Assertions The assert statement
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chapter 7 Input/Output Input and ou
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Figure 7.4: Writer hierarchy. 7.1 T
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7.2.1 FileWriter Example The WriteF
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7.2.3 The OutputStreamWriter Stream
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7.2.5 FileReader Example The ReadFi
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in line 15. In this case, the progr
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7.4.1 BufferedWriter Example Recall
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In line 9, we create a FileReader s
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7.5.2 DataInputStream Example The R
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7.6.1 Writing to a Random Access Fi
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7.7 Object Serialization Normally,
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WriteAccount is a program that writ
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7.7.1 Controlling Serialization Wri
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chapter 8 Developing GUIs From its
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8.2.1 Button This is one of the sim
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Figure 8.3: Swing component inherit
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8.2.4 Radio Button A radio button g
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8.2.8 List A list component display
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8.3.2 Background and Foreground Col
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cp = this.getContentPane(); cp.add(
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JPanel mypanel; declares a mypanel
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To specify an alignment, use the co
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classes are not part of the Java la
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8.7.1 ActionListener ActionListener
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itemStateChanged 1 public void item
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The listener registration is perfor
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8.9 CustomerDetails Example In this
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92 if (e.getSource() instanceof JCo
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creates a scrollpane object, addres
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HEIGHT = 200 gives the initial heig
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Figure 8.9: Applet Viewer invoking
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24 class Panel extends JPanel { 25
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chapter 9 Collections The Java Coll
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10 c.add(''Brown"); 11 c.add("Able"
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c2.add("Able"); The statement c.add
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23 return empNumber == e.empNumber
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Suppose we want to sort by name and
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The List interface also provides it
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There is no iterator object that it
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Details of all the Collections clas
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PrintNumbersThread 1 public class P
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10.3 Thread Priorities By default,
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The code for the corresponding HTML
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22 } catch (InterruptedException e)
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We can create a synchronized block
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appendix B Swing Events The followi
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