概括的介绍java及其网络开发

				/*	范例名称：Servlet应用举例				 * 	源文件名称：First.java / first_servlet.html				 *	要  点：Servlet的基本结构及运行机制				 */				 				import java.io.*;				import java.text.*;				import java.util.*;				import javax.servlet.*;				import javax.servlet.http.*;								public class First extends HttpServlet {								    public void doGet(HttpServletRequest request,				                      HttpServletResponse response)				        throws IOException, ServletException				    {				        String firstName,lastName;						firstName =  request.getParameter("firstname");						lastName = request.getParameter("lastname");								        response.setContentType("text/html");        				        PrintWriter out = response.getWriter();								        out.println("");				        out.println("");				        out.println("" + "FirstServlet" + "");				        out.println("");				        out.println("");				        out.println("");						out.println("Welcome," + firstName+lastName + "");				        out.println("");				        out.println("");				    }				}