The java language

The Java™ Tutorial has been an indispensable resource for many programmers learning the Java programming language. This tutorial hopes to serve the same role for developers encountering the Java™ 2 Platform, Enterprise Edition (J2EE™) for the first time. It follows an example-oriented focus similar to The Java™ Tutorial.

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The Java™ programming language was originally called Oak, and was designed for use in embedded consumer-electronic applications by James Gosling. After several years of experience with the language, and significant contributions by Ed Frank, Patrick Naughton, Jonathan Payne, and Chris Warth it was retargeted to the Internet, renamed, and substantially revised to be the language specified here.

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This chapter introduces you to the Java language and gives you enough details to allow you to write simple programs involving expressions, assignments, and console output. The details about assignments and expressions are similar to that of most other highlevel languages. Every language has its own way of handling strings and console output, so even the experienced programmer should look at that material. Even if you are already an experienced programmer in some language other than Java, you should read at least the subsection entitled “A Sample Java Application Program” in Section 1.

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This book is a desktop quick reference for the Java 2 Micro Edition (J2ME ). It is intended for Java programmers writing applications for devices with limited memory resources and processor power, such as cell...

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JDK 1.5 introduces several extensions to the Java programming language. One of these is the introduction of generics. This tutorial is aimed at introducing you to generics. You may be familiar with similar constructs from other languages, most notably C++ templates. If so, you’ll soon see that there are both similarities and important differences. If you are not familiar with look-a-alike constructs from elsewhere, all the better; you can start afresh, without unlearning any isconceptions.

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In late 1995, the Java programming language burst onto the Internet scene and gained instant celebrity status. The promise of Java technology was that it would become the universal glue that connects users with information wherever it comes from—web servers, databases, information providers, or any other imaginable source. Indeed, Java is in a unique position to fulfill this promise.

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Jess is a rule engine for the Java platform. To use it, you specify logic in the form of rules using one of two formats: the Jess rule language (prefered) or r XML . You also provide some of your own data for the rules to operate on. When you run the rule engine, your rules are carried out. Rules can create new data, or they can do anything that the Java programming language can do.

207p 0101172399 14-07-2010 196 32   Download

Android development is hot, and many programmers are interested in joining the fun. However, because this technology is based on Java, you should first obtain a solid grasp of the Java language and its foundational APIs to improve your chances of succeeding as an Android app developer. After all, you will be busy learning the architecture of an Android app, the various Android-specific APIs, and Android-specific tools. If you do not already know Java fundamentals, you will probably end up with a massive headache from also having to quickly cram those fundamentals into your knowledge base. ...

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When the chronicle of computer languages is written, the following will be said: B led to C, C evolved into C++, and C++ set the stage for Java. To understand Java is to understand the reasons that drove its creation, the forces that shaped it, and the legacy that it inherits. Like the successful computer languages that came before, Java is a blend of the best elements of its rich heritage combined with the innovative concepts required by its unique environment.

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Learning to design objects effectively with Java is the goal of Beginning Java Objects: From Concepts to Code, Second Edition. Plenty of titles dig into the Java language in massive detail, but this one takes the unique approach of stepping back and looking at fundamental object concepts first. Mastery of Java—from understanding the basic language features to building complete industrial-strength Java applications—emerges only after a thorough tour of thinking in objects.

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The Deitels' groundbreaking How to Program series offers unparalleled breadth and depth of programming concepts and intermediate-level topics for further study. The books in this series feature hundreds of complete, working programs with thousands of lines of code. This edition is completely up-to-date with The Java 2 Platform Standard Edition (J2SE) 1.5. Now includes topics such as autoboxing, enumerations, enhanced for loops, static import

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JDK 1.5 introduces several extensions to the Java programming language. One of these is the introduction of generics. This tutorial is aimed at introducing you to generics. You may be familiar with similar constructs from other languages, most notably C++ templates. If so, you’ll soon see that there are both similarities and important differences. If you are not familiar with look-a-alike constructs from elsewhere, all the better; you can start afresh, without unlearning any misconceptions. Generics allow you to abstract over types.

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If you are new to programming in the JavaTM language, have some experience with other languages, and are familiar with things like displaying text or graphics or performing simple calculations, this tutorial could be for you. It walks through how to use the Java® 2 Platform software to create and run three common types of programs written for the Java platform—applications, applets, and servlets

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With the release of Java 7, numerous new features have been added that significantly improve the developer's ability to create and maintain Java applications. These include language improvements, such as better exception handling techniques, and additions to the Java core libraries, such as new threading mechanisms. This cookbook covers these new features using a series of recipes. Each recipe addresses one or more new features and provides a template for using these features. This should make it easier to understand the features along with when and how they can be used.

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Chapter 5 - Classes and methods II. In this chapter we will: formally introduce the class construct as it is used in the Java language, discuss the use of instance variables to facilitate method communication, demonstrate the use of classes to improve program structure.

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JavaServer Pages technology lets you embed a scripting language in web pages (HTML documents). The scripted HTML file has a .jsp extension to identify it as a JavaServer Pages file to the server. Before the page is served, the JavaServer Pages syntax is parsed and processed into an object on the server side. The resulting object generates dynamic HTML content and sends it back to the client. JavaServer Pages technology uses the Java(TM) programming language as the default scripting language.

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This book is designed to help you make the most effective use of the Java™ programming language and its fundamental libraries, java.lang, java.util, and, to a lesser extent, java.io. The book discusses other libraries from time to time, but it does not cover graphical user interface programming or enterprise APIs.

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XML, XML, XML, XML. You can see it on hats and t-shirts, read about it on the cover of every technical magazine on the planet, and hear it on the radio or the occasional Gregorian chant album. . . . Well, maybe it hasn't gone quite that far yet, but don't be surprised if it does. XML, the Extensible Markup Language, has seemed to take over every aspect of technical life, particularly in the Java™ community. An application is no longer considered an enterprise-level product if XML isn't being used somewhere.

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This book is about Java's support for dealing with groups of data. Prior to the Java 2 release, the only standard support for data structures and algorithms was a few fairly basic options available through arrays, hash tables, and vectors. Many people either created their own standard data structure library or reused one of several libraries introduced to deal with collections like the Generic Collection Library for Java (JGL) from ObjectSpace.

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When I first mentioned to a colleague of mine that I was writing a book on JavaTM security, he immediately starting asking me questions about firewalls and Internet DMZs. Another colleague overheard us and started asking about electronic commerce, which piqued the interest of a third colleague who wanted to hear all about virtual private networks. All this was interesting, but what I really wanted to talk about was how a Java applet could be allowed to read a file.

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