Float value giving exception.

Hi,
I am using a bean for a shopping cart. I used this code
public float getCost()
          Enumeration enum=hashtable.elements();
          String[] tmpItem;
          float totalCost=0.00f;
          while(enum.hasMoreElements())
               tmpItem=(String[])enum.nextElement();
               //totalCost += (Integer.parseInt(tmpItem[3]) * Float.parseFloat(tmpItem[2]));
               totalCost += (Integer.parseInt(tmpItem[3]) * Float.parseFloat(tmpItem[2]));
          return totalCost;
which is giving me this exception.
reported this exception: java.lang.Float: method parseFloat(Ljava/lang/String;)F not found. Please report this to the
administrator of the web server.
java.lang.NoSuchMethodError: java.lang.Float: method parseFloat(Ljava/lang/String;)F not found at
ShopBean.getCost(Compiled Code) at Checkout.doGet(Checkout.java:20) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:715) at
javax.servlet.http.HttpServlet.service(Compiled Code) at
com.sun.server.ServletState.callService(Compiled Code) at
com.sun.server.ServletManager.callServletService(Compiled Code) at
com.sun.server.http.servlet.InvokerServlet.service(Compiled Code) at
javax.servlet.http.HttpServlet.service(Compiled Code) at
com.sun.server.ServletState.callService(Compiled Code) at
com.sun.server.ServletManager.callServletService(Compiled Code) at
com.sun.server.ProcessingState.invokeTargetServlet(Compiled Code) at
com.sun.server.http.HttpProcessingState.execute(Compiled Code) at
com.sun.server.http.stages.Runner.process(Compiled Code) at
com.sun.server.ProcessingSupport.process(Compiled Code) at com.sun.server.Service.process(Compiled
Code) at com.sun.server.http.HttpServiceHandler.handleRequest(Compiled Code) at
com.sun.server.http.HttpServiceHandler.handleRequest(Compiled Code) at
com.sun.server.HandlerThread.run(Compiled Code)
Can any one correct me please?
Thanks
Uma

Hi
Here is the code which will be calling the bean
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class Checkout extends HttpServlet
     String itemsvalues,itemno;
     String[] tmpItem;
     public void doGet(HttpServletRequest req,HttpServletResponse res)
          try
               ServletOutputStream sos = res.getOutputStream();
               ShopBean cart =(ShopBean)req.getSession().getValue("cart");
               int totalItems = cart.getNumOfItems();
               System.out.println("totalItems="+totalItems);
               sos.println("<h4>In Checkout.java</h4>");
               float totalCost = cart.getCost();
               sos.println("<h5>Total cost is:"+totalCost+"</h5>");
          catch(Exception e)
               e.printStackTrace();
This class is giving me exceptions
Thanks
Uma

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