Core Java, Volume 1: Fundamentals (8th Edition)

By Cay S. Horstmann, Gary Cornell

This revised variation of the vintage Core Java™, quantity I–Fundamentals , is the definitive advisor to Java for critical programmers who are looking to positioned Java to paintings on actual projects.

Fully up-to-date for the hot Java SE 6 platform, this no-nonsense educational and trustworthy reference illuminates an important language and library positive aspects with completely verified real-world examples. the instance courses were rigorously crafted to be effortless to appreciate in addition to necessary in perform, so that you can depend upon them as a very good start line to your personal code.

Volume I is designed to speedy convey you up to the mark on what’s new in Java SE 6 and that can assist you make the transition as successfully as attainable, even if you’re upgrading from an past model of Java or migrating from one other language. The authors be aware of the basic strategies of the Java language, besides the fundamentals of user-interface programming. You’ll locate specific, insightful assurance of 

  • Java fundamentals
  • Object-oriented programming
  • Interfaces and internal classes
  • mirrored image and proxies
  • the development listener model
  • GUI programming with Swing
  • Packaging applications
  • Exception handling
  • Logging and debugging
  • well-known programming
  • The collections framework
  • Concurrency
  • For exact assurance of XML processing, networking, databases, internationalization, safety, complex AWT/Swing, and different complicated good points, search for the drawing close 8th variation of Core Java™, quantity II—Advanced good points

    A travel of This Book
    Chapter 1 offers an summary of the features of Java that set it except different programming languages. We clarify what the designers of the language got down to do and to what quantity they succeeded. Then, we supply a brief background of ways Java got here into being and the way it has evolved.

    In Chapter 2, we let you know easy methods to obtain and set up the JDK and this system examples for this booklet. Then we advisor you thru compiling and working 3 commonplace Java courses, a console program, a graphical program, and an applet, utilizing the apparent JDK, a Java-enabled textual content editor, and a Java IDE.

    Chapter 3 begins the dialogue of the Java language. during this bankruptcy, we disguise the fundamentals: variables, loops, and easy services. while you're a C or C++ programmer, this is often tender crusing as the syntax for those language beneficial properties is basically just like in C. in case you come from a non-C history corresponding to visible easy, you'll want to learn this bankruptcy carefully.

    Object-oriented programming (OOP) is now within the mainstream of programming perform, and Java is totally item orientated.

    Chapter 4 introduces encapsulation, the 1st of 2 basic construction blocks of item orientation, and the Java language mechanism to enforce it, that's, periods and strategies. as well as the foundations of the Java language, we additionally provide recommendation on sound OOP layout. ultimately, we disguise the outstanding javadoc software that codecs your code reviews as a suite of hyperlinked websites. while you are accustomed to C++, then you definitely can flick thru this bankruptcy speedy. Programmers coming from a non-object-oriented history may still anticipate to spend a while learning OOP thoughts sooner than going extra with Java.

    Classes and encapsulation are just one a part of the OOP tale, and Chapter 5 introduces the opposite, particularly, inheritance. Inheritance permits you to take an latest category and regulate it in line with your wishes. it is a primary approach for programming in Java. The inheritance mechanism in Java is sort of just like that during C++. once more, C++ programmers can concentrate on the diversities among the languages.

    Chapter 6 exhibits you the way to exploit Java’s suggestion of an interface. Interfaces allow you to transcend the easy inheritance version of bankruptcy five. studying interfaces enables you to have complete entry to the ability of Java’s thoroughly object-oriented method of programming. We additionally conceal an invaluable technical function of Java known as internal sessions. internal sessions assist in making your code purifier and extra concise.

    In Chapter 7, we commence software programming in earnest. each Java programmer may still understand a section approximately GUI programming, and this quantity comprises the fundamentals. We convey how one can make home windows, the right way to paint on them, how you can draw with geometric shapes, tips on how to layout textual content in a number of fonts, and the way to exhibit images.

    Chapter 8 is an in depth dialogue of the development version of the AWT, the summary window toolkit. You’ll see the best way to write the code that responds to occasions like mouse clicks or key presses. alongside the best way you’ll see how one can deal with easy GUI parts like buttons and panels.

    Chapter 9 discusses the Swing GUI toolkit in nice aspect. The Swing toolkit permits you to construct a cross-platform graphical person interface. You’ll study all concerning the several types of buttons, textual content elements, borders, sliders, record bins, menus, and conversation bins. although, a number of the extra complex elements are mentioned in quantity II.

    Chapter 10 exhibits you ways to installation your courses, both as functions or applets. We describe how you can package deal courses in JAR records, and the way to carry purposes over the net with the Java net commence and applet mechanisms. eventually, we clarify how Java courses can shop and retrieve configuration info when they were deployed.

    Chapter 11 discusses exception dealing with, Java’s powerful mechanism to accommodate the truth that undesirable issues can occur to sturdy courses. Exceptions provide you with a good approach of isolating the conventional processing code from the mistake dealing with. in fact, even after hardening your application via dealing with all unheard of stipulations, it nonetheless may possibly fail to paintings as anticipated. within the moment 1/2 this bankruptcy, we provide you with a lot of beneficial debugging counsel. eventually, we consultant you thru a pattern debugging session.

    Chapter 12 provides an summary of frequent programming, an enormous enhance of Java SE 5.0. favourite programming makes your courses more straightforward to learn and more secure. We convey you ways you should use robust typing and take away ugly and hazardous casts, and the way you could care for the complexities that come up from the necessity to remain appropriate with older models of Java.

    The subject of Chapter 13 is the collections framework of the Java platform. everytime you are looking to acquire a number of items and retrieve them later, you'll want to use a suite that's most suitable in your conditions, rather than simply tossing the weather into an array. This bankruptcy exhibits you the way to exploit the normal collections which are prebuilt on your use....

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    Within the undefined, easily provide the dossier identify: PrintWriter out = new PrintWriter("myfile. txt"); If the dossier doesn't exist, you could easily use the print, println, and printf instructions as you probably did while printing to approach. out. warning: you could build a Scanner with a string parameter, however the scanner translates the string as facts, no longer a dossier identify. for instance, when you name Scanner in = new Scanner("myfile. txt"); // errors? then the scanner will see ten characters of knowledge: 'm', 'y', 'f', etc. that's not really what was once meant as a consequence. be aware: if you specify a relative dossier identify, similar to "myfile. txt", "mydirectory/myfile. txt", or ".. /myfile. txt", the dossier is found relative to the listing within which the Java digital desktop used to be all started. when you introduced your software from a command shell, through executing java MyProg then the beginning listing is the present listing of the command shell. even if, in case you use an built-in improvement setting, the beginning listing is managed by means of the IDE. you'll find the listing place with this name: String dir = approach. getProperty("user. dir"); in the event you run into grief with finding documents, think about using absolute direction names resembling "c:\\mydirectory\\myfile. txt" or "/home/me/mydirectory/myfile. txt". As you simply observed, you could entry records simply as simply as you should use approach. in and method. out. there's only one seize: in the event you build a Scanner with a dossier that doesn't exist or a PrintWriter with a dossier identify that can not be created, an exception happens. The Java compiler considers those exceptions to be extra severe than a “divide via 0” exception, for instance. In bankruptcy eleven, you'll examine a variety of methods for handing exceptions. For now, you might want to easily inform the compiler that you're conscious of the potential of a “file no longer discovered” exception. You do that via tagging the most process with a throws clause, like this: public static void main(String[] args) throws FileNotFoundException { Scanner in = new Scanner(new File("myfile. txt")); . . . } you might have now visible find out how to learn and write records that include textual facts. For extra complex subject matters, similar to facing diversified personality encodings, processing binary information, interpreting directories, and writing zip records, please flip to bankruptcy 1 of quantity II. bankruptcy three. basic Programming buildings in Java keep watch over circulation observe: in case you release a software from a command shell, you should use the redirection syntax of your shell and fix any dossier to approach. in and method. out: java MyProg < myfile. txt > output. txt Then, you needn't fear approximately dealing with the FileNotFoundException. java. util. Scanner five. zero • Scanner(File f) constructs a Scanner that reads facts from the given dossier. • Scanner(String info) constructs a Scanner that reads information from the given string. java. io. PrintWriter 1. 1 • PrintWriter(File f) constructs a PrintWriter that writes facts to the given dossier. • PrintWriter(String fileName) constructs a PrintWriter that writes information to the dossier with the given dossier identify. java. io. dossier 1. zero • File(String fileName) constructs a dossier item that describes a dossier with the given identify.

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