What is the difference between java appet and java servlet?
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There are some things to note to note about Servlets as opposed to Applets.\n\nFirstly, the servlet and its environment is completely under the control of those deploying it. That is, you have control of which JVM is used and that this is independent of the browser used by the user. This is important as it removes concerns associated with the so-called “browser” wars.\nSecondly, a servlet is not constrained by the applet sandbox. This means that a servlet can reside behind a firewall and can communicate with any and all systems that it needs to. For example, JavaIDL can be used to connected to a CORBA compliant Object Request Broker (ORB) or sockets to connect to legacy systems (for example implemented in C).\nThirdly, the client Web browser does not communicate directly with the servlet. Rather the browser communicates with the Web server, which in turn communicates with the servlet. Thus if the web server is secure behind a firewall, then the servlet is also secure.\nFourthly a single Servlet can process multiple user requests. That is one instance (by default) of a Servlet is loaded into the web server and this instance services all user requests. This does not mean that each request is queued. Rather it means that each request is handled by a separate thread (of execution) that uses the same servlet instance.\nFifthly, as each Servlet is shared amongst multiple users, care must be taken with user specific data. For example, this means that sensitive user information should not be stored in an instance variable as the instance is shared amongst many users. This can be overcome by using a HttpSession object that can be obtained from the initial request. Each session object is linked to a single user.
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I think you should learn Java because it has rich class library which will enable you to add the required functionality.The intigrated technologies such as Servlets and JSP are Sun's implementation of PHP and ASP.Also as a matter of fact Java and J2EE server comes free of cost and are available for download at www.java.sun.com\nAlso use mySQL with JSP to add database functionality to your site.\n\nI think you should follows these steps to make the procedure fast\n1 Download JDK1.5,J2EE 1.4 ,mySQL and JConnector\nyou will find J connector onmysql's webiste\n2 Install them take help from their resp.  official sites\n3 learn JSP you could get help on java.sun.com \n4 for uploading the site on internet you could try\nwww.myjavaserver.com you will be surprised to know that it all comes free of cost\n5 Now this comes as a bonus you could try www.freedomain.co.nr for get yor required URL free of cost
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It's a little complicated, but basically each has a different advantage.  Get appends the form data to the url in the request. For example, in "http://www.google.com/search?hl=en&q=get+vs+post," everything after the question mark is part of the form data.  Post submits the data within a message body.\n\nGet is more optimal for queries and searches, whereas post is better for submitting data that will be used to make changes on a server.
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Because you don't have instaled the Java.\nThis is a link for you: http://www.java.com/en/download/index.jsp
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Unless you write or use a special or custom class loader class files are loaded from the CLASSPATH. The can be defined as a environment variable or you can pass it in as a option to the java runtime. So you don't actually "register" when usuing just the JVM. If using some Java J2EE applicaitons / servers they will provide a configuration or installation aide that will build the classpath for you. Without knowing what environment your running on / using I can only point you to the -classpath option at the command line.\n\nCheers, good luck
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Accessing the database implementation in jsp/servlets needs mainly 4 steps to follow, they are,\n\nStep1 : Load the Database Driver\n                  ex: Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");\n\nStep2 : Establish  the Connection\n                 ex: Connection con = DriverManager.getConnection("jdbc:odbc:<dsn-name>","DBusernaem","<DB pwd>");\n\nStep3 : Create Statement\n                  ex: Statement st = con.createStatement();\n\nStep4 : Execute Statement and return the Result Set or Result   Set Count\n                  ex: ResultSet rs = st.executeQuery("SQLQuery");
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Hi\n\nTOMCAT_HOME=C:&#92;tomcat\n\nTOMCAT_HOME&#92;webapps&#92;<CreateUrFolder>&#92;Put Your Jsp here\n\nExecute\n\nhttp://localhost:8080/CreateUrFolder/JSPName.jsp
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just curious - why do you think they would go an extra mile to write the applet viewer, if there was a way to run the program without it?\n\nYou can add a main() function to your applet class, and just run it with a regular java, but it won't be able to use any of the appet gui features - that's what the appet viewer is needed for. If it is a well written program, it may be trivial to makme it possible to run it as both an applet and a standalone application, but if it is not, it is, probably easier to just write a brand new one from scratch, or stick with the appet viewer.\n\nYou can also use your browser instead of the applet viewer - no, you don't need tomcat, or even a web server running for this, as incorrectly suggested above - just make an html page, referring to your applet, and open it with the browser as a local file... but, frankly, I don't see any reason why you'd want to do that instead of the applet viewer.
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Java refers to the programming language.\nIt's key features are:\n1. Your java source can run on multiple operating systems (Unix, Windows) due to the following architecture:\nA. Java source code is compiled into a platform independent byte-code \nB. Java byte-code is interpreted by a platform specific Java Virtual Machine (JVM).\n\n2. I think that the greatest benefits are of Java are that:\nA. It is a strongly typed (You don't have to deal with subtle errors caused by implicit type conversions - like an Array to a String)\nB. It is object oriented (see: wikipedia.org)  and has class-based inheritance (Easy re-use of functionality without the confusion of inheriting from multiple classes)\nC. It does not allow direct access to pointers to memory (prevents you from accidently reading from or writing to memory intended for another application)\nD. It is multi-threaded.  (For example, it's relatively easy to implement a word processor checks your spelling and grammar while you type.  You type in the main thread and the spell check runs in a separate thread, so your typing is not held up while the spell check runs.)\n\nj2se or Java 2 Standard Edition, contains the JVM and Compiler that I mentioned above under "key features"\nas well as an extensive set of built in classes.  Data Structures that ship with the j2se - such as the Collections API are a huge time saver for developers.\n\nJ2EE stands for "Java 2 Enterprise Edition".  \n"Enterprise" means distributed; this functionality allows you to run a component of your application in Boston and another component in Miami.\nKey features of J2EE include Servlets and Enterprise Java Beans (EJB's).
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http://www.java.com/en/download/manual.jsp
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Unless you write or use a special or custom class loader class files are loaded from the CLASSPATH.  The can be defined as a environment variable or you can pass it in as a option to the java runtime.  So you don't actually "register" when usuing just the JVM.  If using some Java J2EE applicaitons / servers they will provide a configuration or installation aide that will build the classpath for you.  Without knowing what environment your running on / using I can only point you to the -classpath option at the command line.  \n\nCheers, good luck
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Java Servlet \nThe Java Servlet API, invented by Sun Microsystems, allows a software developer to add dynamic content to a web server using the Java platform. The generated content is commonly HTML, but may be other data such as XML. Servlets are the Java counterpart to dynamic web content technologies such as CGI, PHP or ASP. Servlets can maintain state across many server transactions by using HTTP Cookies, session variables or URL rewriting.\n\nThe Servlet API, contained in the javax.servlet package hierarchy, defines the expected interactions of a web container and a servlet. A web container is essentially the component of a web server that interacts with the servlets. The web container is responsible for managing the lifecycle of servlets, mapping a URL to a particular servlet and ensuring that the URL requester has the correct access rights.\n\nA Servlet is an object that receives requests (ServletRequest) and generates a response (ServletResponse) based on the request. The API package javax.servlet.http defines HTTP subclasses of the generic servlet (HttpServlet) request (HttpServletRequest) and response (HttpServletResponse) as well as an (HttpSession) that tracks multiple requests and responses between the web server and a client. Servlets may be packaged in a WAR file as a Web application.\n\nMoreover, servlets can be generated automatically by Java Server Pages (JSP), or alternately by template engines such as WebMacro. Often servlets are used in conjunction with JSPs in a pattern called "Model 2", which is a flavor of the model-view-controller pattern
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Consider this tutorial http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/Servlets.html.
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The javax.servlet.Servlet interface defines the three methods known as life-cycle method.\npublic void init(ServletConfig config) throws ServletException\npublic void service( ServletRequest req, ServletResponse res) throws ServletException, IOException\npublic void destroy()\nFirst the servlet is constructed, then initialized wih the init() method.\nAny request from client are handled initially by the service() method before delegating to the doXxx() methods in the case of HttpServlet.\n\nThe servlet is removed from service, destroyed with the destroy() methid, then garbaged collected and finalized.
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java is a programming language\nhtml is a language to build webpage\nfrontpage is a program/ tool to help build a webpage
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Public interface ServletConfig\n\nA servlet configuration object used by a servlet container used to pass information to a servlet during initialization. \n\nThe configuration information contains initialization parameters, which are a set of name/value pairs, and a ServletContext object, which gives the servlet information about the server.
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You can write servlets form home.\n\nYou need J2EE 1.4 (free form sun.com)\n\nYou will also need Tomcat (free from tomcat.apache.org) as the Servlet/JSP container.\n\nThis should be enough for you until you want EJB.