scwcd的考试,测试代码,如果希望参加此类考试将非常的有帮助

				package scwcd.ch08;
				
				import javax.servlet.*;
				import javax.servlet.http.*;
				import java.io.*;
				import java.util.*;
				
				public class ServletA extends HttpServlet {
				  char stack[] = new char[100];
				  int idx;
				
				  public void init(){
				    stack[0]='A';
				    stack[1]='B';
				    stack[2]='C';
				    idx = 3;
				  }
				
				  public void doGet(HttpServletRequest request, 
				                    HttpServletResponse response) 
				         throws ServletException, IOException {
				    response.setContentType("text/html; charset=GB2312");
				    PrintWriter out = response.getWriter();
				    out.println("");
				    out.println("栈数据存取测试");
				    out.println("");
				    char c = generateChar();
				    out.println("产生的字符为: " + c );
				    out.println("  ==> 调用 push() 将 " + c + " 存入数组...");
				    push(c);
				    out.println("");
				    out.println("调用 pop() 从数组取出一个字符");
				    out.println(" ==> 结果为: " + pop());
				    out.println("");
				  }
				
				  public char pop() {
				    idx--;
				    return stack[idx];
				  }
				  public void push(char c){
				    stack[idx]=c;
				    idx++;
				  }
				  public char generateChar(){
				    char c = (char) (65 + 25 * (Math.random()));
				    return c;
				  }  
				}