By Cay S. Horstmann, Gary Cornell
This revised variation of the vintage Core Java™, quantity I–Fundamentals , is the definitive consultant to Java for severe 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 gains with completely demonstrated real-world examples. the instance courses were rigorously crafted to be effortless to appreciate in addition to worthy in perform, so that you can depend on them as a good place to begin in your personal code.
Volume I is designed to quick convey you up to the mark on what’s new in Java SE 6 and that will help you make the transition as successfully as attainable, even if you’re upgrading from an prior model of Java or migrating from one other language. The authors pay attention to the elemental innovations of the Java language, in addition to the fundamentals of user-interface programming. You’ll locate designated, insightful insurance of
For special assurance of XML processing, networking, databases, internationalization, defense, complicated AWT/Swing, and different complicated positive factors, search for the imminent 8th version of Core Java™, quantity II—Advanced positive aspects
A journey of This Book
Chapter 1 provides an outline of the functions of Java that set it except different programming languages. We clarify what the designers of the language got down to do and to what volume they succeeded. Then, we provide a brief heritage of the way Java got here into being and the way it has evolved.
In Chapter 2, we let you know how you can obtain and set up the JDK and this system examples for this publication. Then we advisor you thru compiling and operating 3 common Java courses, a console software, a graphical program, and an applet, utilizing the apparent JDK, a Java-enabled textual content editor, and a Java IDE.
Chapter 3 starts off the dialogue of the Java language. during this bankruptcy, we conceal the fundamentals: variables, loops, and easy capabilities. while you are a C or C++ programmer, this can be tender crusing as the syntax for those language beneficial properties is basically almost like in C. if you happen to come from a non-C history similar to visible uncomplicated, 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 primary development blocks of item orientation, and the Java language mechanism to enforce it, that's, sessions and strategies. as well as the foundations of the Java language, we additionally provide suggestion on sound OOP layout. ultimately, we conceal the significant javadoc device that codecs your code reviews as a suite of hyperlinked web content. while you are acquainted with C++, then you definately can flick thru this bankruptcy speedy. Programmers coming from a non-object-oriented heritage may still anticipate to spend your time learning OOP innovations earlier than going additional with Java.
Classes and encapsulation are just one a part of the OOP tale, and Chapter 5 introduces the opposite, specifically, inheritance. Inheritance allows you to take an present classification and adjust it based on your wishes. it is a basic strategy for programming in Java. The inheritance mechanism in Java is sort of just like that during C++. once more, C++ programmers can specialize in the diversities among the languages.
Chapter 6 indicates you ways to take advantage of Java’s thought of an interface. Interfaces allow you to transcend the straightforward inheritance version of bankruptcy five. getting to know interfaces helps you to have complete entry to the facility of Java’s thoroughly object-oriented method of programming. We additionally disguise an invaluable technical characteristic of Java referred to as internal sessions. internal periods help in making your code cleanser and extra concise.
In Chapter 7, we start software programming in earnest. each Java programmer may still comprehend a piece approximately GUI programming, and this quantity includes the fundamentals. We express how one can make home windows, tips to paint on them, easy methods to draw with geometric shapes, the right way to structure textual content in a number of fonts, and the way to exhibit images.
Chapter 8 is a close 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 easy methods to deal with uncomplicated GUI parts like buttons and panels.
Chapter 9 discusses the Swing GUI toolkit in nice element. The Swing toolkit lets you construct a cross-platform graphical person interface. You’ll research all in regards to the different types of buttons, textual content parts, borders, sliders, checklist containers, menus, and conversation containers. besides the fact that, a few of the extra complicated parts are mentioned in quantity II.
Chapter 10 exhibits you the way to set up your courses, both as functions or applets. We describe tips to package deal courses in JAR records, and the way to bring functions over the net with the Java internet begin and applet mechanisms. eventually, we clarify how Java courses can shop and retrieve configuration details when they were deployed.
Chapter 11 discusses exception dealing with, Java’s strong mechanism to house the truth that undesirable issues can occur to stable courses. Exceptions provide you with an effective manner of isolating the traditional processing code from the mistake dealing with. in fact, even after hardening your software by means of dealing with all unheard of stipulations, it nonetheless could fail to paintings as anticipated. within the moment 1/2 this bankruptcy, we offer you a number of invaluable debugging counsel. ultimately, we consultant you thru a pattern debugging session.
Chapter 12 provides an outline of frequent programming, a massive develop of Java SE 5.0. usual programming makes your courses more uncomplicated to learn and more secure. We exhibit you ways you should use powerful typing and take away unpleasant and hazardous casts, and the way you could care for the complexities that come up from the necessity to remain appropriate with older types 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 set that's most fitted to your conditions, rather than simply tossing the weather into an array. This bankruptcy indicates you the way to use the traditional collections which are prebuilt in your use....
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Extra info for Core Java, Volume 1: Fundamentals (8th Edition)
Even if a method takes no parameters, you must still use empty parentheses. For example, a variant of the println method with no parameters just prints a blank line. out also has a print method that doesn’t add a new line character to the output. print("Hello") prints Hello without a new line. The next output appears immediately after the letter o. Comments Comments in Java, like comments in most programming languages, do not show up in the executable program. Thus, you can add as many comments as needed without fear of bloating the code.
Then we will load the applet into the applet viewer that comes with the JDK. Finally, we will display it in a web browser. html Figure 2–10 shows what you see in the applet viewer window. Figure 2–10 WelcomeApplet applet as viewed by the applet viewer The first command is the now-familiar command to invoke the Java compiler. class. 31 Chapter 2. The Java Programming Environment 32 Chapter 2 ■ The Java Programming Environment This time, however, you do not run the java program. You invoke the appletviewer program instead.
Chapter 2. The Java Programming Environment 16 Chapter 2 ■ The Java Programming Environment I n this chapter, you will learn how to install the Java Development Kit (JDK) and how to compile and run various types of programs: console programs, graphical applications, and applets. You run the JDK tools by typing commands in a shell window. However, many programmers prefer the comfort of an integrated development environment. We show you how to use a freely available development environment to compile and run Java programs.