Search the Book in Java

Make QR Code 2d barcode in Java Search the Book
Search the Book
QR Code JIS X 0510 Scanner In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
Previous Page
Generate QR Code In Java
Using Barcode printer for Java Control to generate, create QR Code JIS X 0510 image in Java applications.
Search Help
Decoding QR Code ISO/IEC18004 In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Next Page
Painting Bar Code In Java
Using Barcode generator for Java Control to generate, create bar code image in Java applications.
... Preface -- 1 -- 2 -- 3 -- 4 -- 5 -- 6 -- 7 -- 8 -- 9 -- A -- B -- C -- Refs Front -- Contents -- Help
Decode Bar Code In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
Copyright 1999 Gary McGraw and Edward Felten. All rights reserved. Published by John Wiley & Sons, Inc.
QR Code 2d Barcode Creator In Visual C#.NET
Using Barcode creator for VS .NET Control to generate, create QR image in Visual Studio .NET applications.
Mobile Code and Security: Why Java Security Is Important
Denso QR Bar Code Drawer In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
CHAPTER SECTIONS: 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10
Paint QR In .NET
Using Barcode creator for .NET Control to generate, create Quick Response Code image in VS .NET applications.
Previous Page Next Page
Generate QR Code In Visual Basic .NET
Using Barcode generator for .NET Control to generate, create QR Code image in Visual Studio .NET applications.
Section 2 -- Mobile Code
Encode Code-39 In Java
Using Barcode generation for Java Control to generate, create ANSI/AIM Code 39 image in Java applications.
The Java programming environment from Sun Microsystems is designed for developing programs that run on many different kinds of networked computers. Because of its multiplatform capabilities, Java shows great promise for relieving many of the headaches that developers encounter when they are forced to migrate code between different types of operating systems. Code that is written in Java should run on all of the most popular platforms-everything ranging from Macintosh and Windows/Intel machines to Linux and Solaris boxes. Recently, the cross-platform capabilities of Java have been called into question. This has led Sun's marketing phrase "write once, run anywhere" to be reinterpreted by skeptics as "write once, test everywhere." Part of the problem is that not all implementations of Java are completely interoperable with Sun's version. Disagreement over what constitutes Java has generated at least one high-profile lawsuit. Most people, including a majority of Java developers, would like to see Java become a standard so that what happened to C (which was itself supposed to be a cross-platform language) doesn't happen to Java. In any case, a nice side effect of Java's built-in portability is that one special kind of Java program (popularly known as an applet) can be attached to a Web page. More technically speaking, applets are embedded into a Web page's hypertext markup language (HTML) definition and executed by Java-savvy browsers.2 Such Java-enabled browsers automatically download and begin running any Java applet they find embedded in a Web page. Java code's ability to run on many diverse platforms makes such "magic" possible. The ability to dynamically download and run Java code over the Net has led some computer pundits to proclaim that the age of truly component-based software development may actually have arrived. The idea is that instead of buying huge monolithic word processing behemoths with hundreds of obscure features that most users will never need, users can instead "create" a personal word processor on the fly out of Java building blocks. This modern sort of programming is akin to building a large toy ship out of Legos blocks. Or, more realistically, the process of creating a component-based software product could be likened to
Barcode Generation In Java
Using Barcode drawer for Java Control to generate, create bar code image in Java applications.
building a highway bridge out of standardized structural components. Sun is advocating a Java component architecture called JavaBeans. A number of companies are creating sets of JavaBeans for various purposes. If these efforts are successful, developers will be able to create programs by putting together sets of prefabricated Beans as illustrated in Figure 1.1. Microsoft's Component Object Model (COM) is very much oriented this way, although it is not specifically designed to use Java. Component-based software has its own interesting security implications and open questions. For example, how can the developer of a system trust a component manufacturer not to have (purposefully or accidentally) introduced security holes into the system How can a component manufacturer anticipate all uses to which a component will be put And so on. These sorts of questions are the topic of current research, including some by the authors of this book.
Generate UCC - 12 In Java
Using Barcode drawer for Java Control to generate, create UCC-128 image in Java applications.
Figure 1.1 Component-based software allows a designer to create large applications from standardized building-blocks. Components in Java are known as JavaBeans. The idea of using pre-fabricated components to build largescale applications will likely do for software what the Industrial Revolution did for manufacturing.
USPS POSTNET Barcode Creation In Java
Using Barcode encoder for Java Control to generate, create Postnet 3 of 5 image in Java applications.
Thinking even farther into the future, one can imagine a fundamentally new kind of computer document that contains the word processing, spreadsheet, and database software that was used to create it. Using a document's embedded components, a writer or editor could modify the document on any platform. The built-in components would allow different people using different machines to edit the document without worrying about the kind of computer they are using or file type compatibility issues. If Java is developed to its full potential, this future world may not be far off. The new idea behind all of these exciting aspects of Java is simple: the ability to send data that can be automatically executed wherever it arrives, anywhere on the Net. Java is an implementation of executable content, or mobile code. This powerful idea opens up many new possibilities on the World Wide Web. For the first time it is possible to have users download from the Web and locally run a program written in a truly common programming language. These features of Java are certainly exciting; however, Java's fantastic potential is mitigated by serious security concerns. Security is always an issue when computers are networked. Realistically speaking, no
Bar Code Scanner In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
computer system is 100-percent secure. Users of networked computers must weigh the benefits of being connected to the world against the risks that they incur simply by connecting. In practice, the goal of a security policy is to make such tradeoffs wisely. One of the key selling points of Java is its use as a "cross-platform" language for creating executable content in the highly interconnected world of the Internet. Simply by using a Web browser, a Web surfer can take advantage of Java's cross-platform capability. Of course, the activity of locally running code created and compiled somewhere else has important security implications. These implications are one focus of this book. The same risks and benefits that apply to connecting to the Internet itself directly apply to using the Java language. As you will see, these concerns become particularly critical when "surfing the Web." The same technology that allows Java applets to enliven once-static Web pages also allows unscrupulous applet designers to invade an unsuspecting Java user's machine. With Java applets showing up everywhere, and many millions of people using Java-enabled browsers, it pays to know where you are pointing your browser.
USS Code 39 Creator In Visual C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create USS Code 39 image in .NET applications.
Scan ANSI/AIM Code 39 In Visual Studio .NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET framework applications.
Creating EAN13 In Visual Basic .NET
Using Barcode creator for .NET Control to generate, create EAN / UCC - 13 image in Visual Studio .NET applications.
Barcode Drawer In Visual Basic .NET
Using Barcode creation for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.