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SHAPE ="RECT" HREF ="/reference/author.html" COORDS ="361,0,440,29"><AREA SHAPE ="RECT" HREF ="/reference/basic.html" COORDS ="254,0,360,29"><AREA SHAPE ="RECT" HREF ="/reference/help.html" COORDS ="183,0,251,29"><AREA SHAPE ="RECT" HREF ="/reference/cool.html" COORDS ="100,0,181,29"><AREA SHAPE ="RECT" HREF ="/reference/mybook.html" COORDS ="0,0,100,29"></MAP><MAP NAME ="header_r1.gif.map"><AREA SHAPE ="RECT" HREF ="/reference/personalize.html" COORDS ="339,0,439,29"></MAP><p><font face="Arial,Helvetica" size="-1" color="#006666"><A HREF="/reference/r_library.html"><B>All Categories</A> :</B><b><A HREF="/reference/r_java.html">Java</A></b></font><p> <META NAME="GENERATOR" CONTENT="Mozilla/3.0b5aGold (WinNT; I) [Netscape]"><H1><FONT COLOR=#FF0000>Chapter 1</FONT></H1><H1><B><FONT SIZE=5 COLOR=#FF0000>The Java Development Environment</FONT></B></H1><P><HR WIDTH="100%"></P><P><H3 ALIGN=CENTER><FONT COLOR="#000000"><FONT SIZE=+2>CONTENTS<A NAME="CONTENTS"></A></FONT></FONT></H3><UL><LI><A HREF="#ToughProblemsinSearchofOneSolution" >Tough Problems in Search of One Solution</A><UL><LI><A HREF="#WhyJavaIsaComprehensiveSolution" >Why Java Is a Comprehensive Solution</A><LI><A HREF="#WhyObjectOrientedIsImportant" >Why Object-Oriented Is Important</A><LI><A HREF="#JavaasanObjectOrientedLanguage" >Java as an Object-Oriented Language</A><LI><A HREF="#JavaasaPortableEnvironment" >Java as a Portable Environment</A><LI><A HREF="#JavaasHighPerformance" >Java as High Performance</A><LI><A HREF="#JavaintheWorldofDistributedComputin" >Java in the World of Distributed Computing</A><LI><A HREF="#JavaasaSecureEnvironment" >Java as a Secure Environment</A></UL><LI><A HREF="#GeneralFeaturesoftheJavaProgramming" >General Features of the Java Programming Language</A><UL><LI><A HREF="#DataTypes" >Data Types</A><LI><A HREF="#Literals" >Literals</A><LI><A HREF="#Variables" >Variables</A><LI><A HREF="#Comments" >Comments</A><LI><A HREF="#Operators" >Operators</A><LI><A HREF="#KeywordsandConditionals" >Keywords and Conditionals</A><LI><A HREF="#Loops" >Loops</A><LI><A HREF="#Arrays" >Arrays</A></UL><LI><A HREF="#AppletsandStandaloneApplications" >Applets and Standalone Applications</A><UL><LI><A HREF="#CreatinganApplet" >Creating an Applet</A><LI><A HREF="#CreatingaStandaloneApplication" >Creating a Standalone Application</A></UL><LI><A HREF="#AppletsVersusStandaloneApplications" >Applets Versus Standalone Applications</A><LI><A HREF="#Summary" >Summary</A></UL><HR><P>Java is a programming language that provides a foundation fordeveloping Internet applications. Java does this through <I>applets</I>,which are programs executed as part of a Web page and displayedwith a Java-enabled browser, such as HotJava or Netscape Navigator2.0. However, Java's features need to be understood in a contextmuch broader than just running Internet applications. Java isa language designed to solve a variety of problems that have plaguedthe computing community for years; running well on the Internetis almost a by-product of solving these problems.<P>What are these problems? And how does Java solve them? This chapterwill attempt to answer those questions. Through the course ofthis chapter, you will be given the background needed for understandingwhy Java, applets, and the Internet are such a natural match.This background will not only help you better understand the techniquesused to program the Java applets developed throughout this book,but the extra knowledge of the "big picture" may alsohelp you come up with novel ways to apply this new technology.Java and the Internet are very much like the old Western frontier-pathfinderswho break new ground may find the gold that lies underneath.<H2><A NAME="ToughProblemsinSearchofOneSolution"><FONT SIZE=5 COLOR=#FF0000>ToughProblems in Search of One Solution</FONT></A></H2><P>A key word often used when discussing the "information superhighway"is <I>convergence</I>. People talk about the convergence of telecommunications⌨️ 快捷键说明
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