mike hengst

PS this happens after I fill out the login.jsp with username and password and then press the submit button which calls the servlet.......

What is the most common cause for this error:
Error. The file was not found. (servlet name = java146.project4.LogIn)
All my stuff is compiled in the right directories. A little frustrating, the answer is probably very obvious as well.. thanks

I have solved the problem. It is adding everybody in now. Now onto the other errors. HA they nver end.

This is my problem:
if LastName map contains the key of this emp's lastname
extract the value object(an arraylist) from the map and add
the current emp object reference to it
else
instantiate a new arraylist and add the emp reference to it
then add the last name key and the arraylist value object
to the map
Here is what I have so far:
public void createLastCollections(Employee emp) { ArrayList emps; System.out.println("createLastCollections() Employee emp passed " + emp); String lname = emp.getLastName(); System.out.println(lname + " last name"); System.out.println((byLast.containsKey(lname)) + " (byLast.containsKey(lname))"); if(byLast.containsKey(emp.getLastName())) { System.out.println("inside if return of emp.getlastName()" + emp.getLastName()); //System.out.println("adding lastname " + lname); ((ArrayList)byLast.get(emp.getLastName())).add(emp); // ((ArrayList)byLast.get(lname)).add(emp); } else { emps = new ArrayList(); emps.add(emp); byLast.put(emp.getLastName(), emp); System.out.println("last name put into hashmap" + lname); } }
The problem is that when I run into the second instance of a last name(inmy case smith) it throws a ClassCastException on this line:
((ArrayList)byLast.get(emp.getLastName())).add(emp);
What should I do??? It does seem that this is the only forum that I can get serious answers to my problems and I truly appreciate that fact. So thatnk you to anyone who can help me straighten out my code.
[ April 07, 2003: Message edited by: mike hengst ]

I have somewhat figured out??? However data is not displaying correctly. Can you look at this please, thank you. Here are the pertinent methods
public String findByID(String id){ ArrayList emps; Employee emp; String result; if(byId.containsKey(id)){ System.out.println("has id = true"); emps = (ArrayList)byId.get(id); emp = (Employee)emps.get(0); System.out.println(emp.toString()); result= emp.toString(); } else{ System.out.println("nosuch thing"); result= "No employee found with the ID " + id; } return result; } public String toString() { System.out.println("in employee toString()"); StringBuffer sb = new StringBuffer(); sb.append(ID + "\t"); sb.append(lName + "\t"); sb.append(fName + "\t"); sb.append(dept + "\t"); return sb.toString(); } constructor for employee public Employee(String[] fields) { System.out.println("inside employee constructor"); //System.out.println(fields + " fields"); ID = fields[0]; //System.out.println(ID); fName = fields[1]; //System.out.println(lName); lName = fields[2]; //System.out.println(fName); dept = fields[3]; //System.out.println(dept); }

Hows this:
public String findByID(String id){ ArrayList emps; Employee emp; String result; if(byId.containsKey(id)){ System.out.println("has id = true"); emps = (ArrayList)byId.get(id); emp = (Employee)emps.get(0); result= emp.toString(emps); } else{ System.out.println("nosuch thing"); result= "No employee found with the ID " + id; } return result; } It still does not work???

Here is an updated code version, same error:
public String findByID(String id) { ArrayList emps; Employee emp; //testing if true if(byId.containsKey(id)) { emps = new ArrayList(); // setting emps to the id emps.add((ArrayList)(byId.get(id))); System.out.println(emps + " emps = ((ArrayList)byId.get(id))"); //emp = new Employee(); emp = (Employee)(emps.get(0)); //THE ERROR IS ON THIS LINE ERROR SAYS JAVA.LANG.CLASSCASTEXCEPTION: JAVA.UTIL.ARRAYLIST return emp.toString(); } else { return "No employees found with the ID " + id; } }

When I run my client server project I am getting a ClassCastException error??? My method finds an employee by the ID, Here are the specs I am to use.
variables
ArrayList emps;
Employee emp; I have an Employee class
Test the map for the passed key
if found
set the emps var to the arraylist found by doing a get on the byId map using the passed arg
extract the one employee outof the map using the map's get(0) method
execute the employees toString() to represent this emp as a string and return the stringto the protocol
otherwise return string that says not found

here is the code:

public String findByID(String id) { ArrayList emps; Employee emp; //testing if true if(byId.containsKey(id)) { emps = new ArrayList(); // setting emps to the id emps.add((ArrayList)byId.get(id)); System.out.println(emps + " emps = ((ArrayList)byId.get(id))"); //emp = new Employee(); emp = (Employee)emps.get(0);//error is here return emp.toString(); } else { return "No employees found with the ID " + id; } }

Here is the code I have working:
package java146.project2; import java.net.*; import java.io.*; import java146.util.*; /** * Description of the Class * *@author MHengst *@created March 25, 2003 */ public class Server { String file = ""; String dir = ""; private ErrorLogger el; private PropertyHandler ph; /** * This class instantiates itself * *@param args The command line arguments *@exception IOException Description of the Exception */ public static void main(String[] args) throws IOException { Server pts = new Server(); System.out.println("server has started"); pts.runIt(); } /** * This methos creates an instance of propertyhandler, errorlogger * *@exception IOException Description of the Exception */ public void runIt() throws IOException { ServerSocket serverSocket = null; boolean listening = true; Search search = new Search(file, dir); try { ph = new PropertyHandler("/config/project2.properties"); el = new ErrorLogger(ph); //file = ph.getNamedProperty("emplocation"); System.out.println(file); } catch(Error e) { System.out.println("Error in run()"); e.printStackTrace(); return; } try { serverSocket = new ServerSocket(4444); System.err.println("Starting server... "); } catch(IOException ioe) { System.out.println("Could not listen on port: 4444."); el.logError(ioe); return; } while(listening) { //new thread object with errorlogger and prophandler passed to it //have to make thread safe the errorlogger-file possibly written to it //at the same time System.out.println("waiting"); new EmpThread(serverSocket.accept(), el, ph, search).start(); System.out.println("new thread started"); } serverSocket.close(); } } // -- end class ProjectTwoServer
package java146.project2; import java.net.*; import java.io.*; import java146.util.*; /** *@author mhengst *@created March 23, 2003 */ public class EmpThread extends Thread { private Socket socket = null; private PropertyHandler ph = null; private ErrorLogger el = null; private Search s = null; /** * Constructor for the Project2Thread object * *@param socket Description of Parameter *@param el Description of the Parameter *@param ph Description of the Parameter *@param s Description of the Parameter */ public EmpThread(Socket socket, ErrorLogger el, PropertyHandler ph, Search s) { super("EmpThread"); this.socket = socket; this.ph = ph; this.el = el; this.s = s; System.out.println("in EmpThread constructor"); } /** * Main processing method for the Project2Thread object */ public void run() { try { System.out.println("Start of thread"); //out goes to client in, in comes from client out PrintWriter out = new PrintWriter(socket.getOutputStream(), true); BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); String inLine = null; String outLine = ""; //instance of project2protocol Protocol p = new Protocol(); outLine = p.processInput(inLine); //System.out.println("outLine: " + outLine); out.println(outLine); System.out.println("Outside while that calls processInput()"); while ((inLine = in.readLine()) != null) { System.out.println("Inside while that calls processInput()"); outLine = p.processInput(inLine); //see what is being output out.println(outLine + " this is what is being out.println inside"); if (outLine.equalsIgnoreCase("Bye")) { break; } } out.close(); in.close(); socket.close(); //do we print trace or send to errorlogger? } catch (IOException ioe) { ioe.printStackTrace(); } } } // -- end class Thread
package java146.project2; import java.net.*; import java.io.*; /** * Description of the Class * *@author MHengst *@created March 26, 2003 */ public class Client extends java.lang.Object { /** * Description of the Method * *@param args Description of the Parameter *@exception IOException Description of the Exception */ public static void main(String args[]) throws IOException { System.out.println("in main of client"); Client c = new Client(); c.runClient(); } /** * Description of the Method * *@exception IOException Description of the Exception */ private void runClient() throws IOException { System.out.println("inside runClient from Client"); Socket sock = null; PrintWriter out = null; BufferedReader in = null; BufferedReader cmdLine = null; String host = "localhost"; try { //creating new socket and input and output streams sock = new Socket(host, 4444); out = new PrintWriter(sock.getOutputStream(), true); in = new BufferedReader(new InputStreamReader(sock.getInputStream())); cmdLine = new BufferedReader(new InputStreamReader(System.in)); } //catching error if there is no host or unable to connect catch(UnknownHostException uhe) { return; } catch(IOException ioe) { //call errorlogger here? stacktrace? return; } String fromServer = ""; String fromUser = ""; //while loop to run through input String str = ""; boolean more = true; System.out.println("in client before while loops"); while(true) { while(more) { //System.out.println("in client inside while loops"); //System.out.println(fromServer); fromServer = in.readLine(); if(fromServer.equalsIgnoreCase("bye")) { more = false; break; } //System.out.println(fromServer + " Before checking for ~Done"); if(fromServer.equalsIgnoreCase("~Done")) { break; } //System.out.println(fromServer + " After checking for ~Done"); //System.out.println("inside while printing of fromServer"); System.out.println(fromServer); } if(!more) { break; } System.out.println("reading from client"); fromUser = cmdLine.readLine(); out.println(fromUser); } //fromUser = cmdLine.readLine(); System.out.println("in client after while loops"); out.close(); in.close(); cmdLine.close(); sock.close(); } } // -- end class Client

I posted my server and thread classes so you could see where I was sending the input from the client. out is my printwriter and outputs to the server the user input. The problem is once the client displays a menu it is supposed to accept user inputs such as 1 or 2 or 3 etc and sends that to the server to retrieve a file etc... Instead the cursor just sits there.???

I am not sure this is the right forum to ask my question but here goes. I am trying to write this application that calls for a client and a server along with other classes which I have not got to yet. Here is the problem: The client won't accept input. I had it working at one point but had to fix a bug and now it does not accept user input. If someone could just take a look at my code and tell me where my error is I would appreciate it greatly. Here are the client and server classes:
package java146.project2; import java.net.*; import java.io.*; /** * Description of the Class * */ public class Client extends java.lang.Object { /** * Description of the Method * *@param args Description of the Parameter *@exception IOException Description of the Exception */ public static void main(String args[]) throws IOException { System.out.println("in main of client"); Client c = new Client(); c.runClient(); } /** * Description of the Method * *@exception IOException Description of the Exception */ private void runClient() throws IOException { System.out.println("inside runClient from Client"); Socket sock = null; PrintWriter out = null; BufferedReader in = null; BufferedReader cmdLine = null; String host = "localhost"; try { //creating new socket and input and output streams sock = new Socket(host, 4444); out = new PrintWriter(sock.getOutputStream(), true); in = new BufferedReader(new InputStreamReader(sock.getInputStream())); cmdLine = new BufferedReader(new InputStreamReader(System.in)); } //catching error if there is no host or unable to connect catch(UnknownHostException uhe) { return; } catch(IOException ioe) { //call errorlogger here? stacktrace? return; } String fromServer = ""; String fromUser = ""; //while loop to run through input String str = ""; boolean more = true; System.out.println("in client before while loops"); while(true) { while(more) { //System.out.println("in client inside while loops"); //System.out.println(fromServer); fromServer = in.readLine(); if(fromServer.equalsIgnoreCase("bye")) { more = false; break; } if(fromServer.equalsIgnoreCase("~Done")) { break; } //System.out.println("inside while printing of fromServer"); System.out.println(fromServer); } if(!more) { break; } System.out.println("reading from client"); fromUser = cmdLine.readLine(); out.println(fromUser); } System.out.println("in client after while loops"); out.close(); in.close(); cmdLine.close(); sock.close(); } } // -- end class Client
package java146.project2; import java.net.*; import java.io.*; import java146.util.*; /** * Description of the Class * */ public class Server { String file = ""; String dir = ""; private ErrorLogger el; private PropertyHandler ph; /** * This class instantiates itself * *@param args The command line arguments *@exception IOException Description of the Exception */ public static void main(String[] args) throws IOException { Server pts = new Server(); System.out.println("server has started"); pts.runIt(); } /** * This methos creates an instance of propertyhandler, errorlogger * *@exception IOException Description of the Exception */ public void runIt() throws IOException { ServerSocket serverSocket = null; boolean listening = true; Search search = new Search(file, dir); try { ph = new PropertyHandler("/config/project2.properties"); el = new ErrorLogger(ph); //file = ph.getNamedProperty("emplocation"); System.out.println(file); } catch(Error e) { System.out.println("Error in run()"); e.printStackTrace(); return; } try { serverSocket = new ServerSocket(4444); System.err.println("Starting server... "); } catch(IOException ioe) { System.out.println("Could not listen on port: 4444."); el.logError(ioe); return; } while(listening) { //new thread object with errorlogger and prophandler passed to it //have to make thread safe the errorlogger-file possibly written to it //at the same time System.out.println("waiting"); new EmpThread(serverSocket.accept(), el, ph, search).start(); System.out.println("new thread started"); } serverSocket.close(); } } // -- end class ProjectTwoServer
package java146.project2; import java.net.*; import java.io.*; import java146.util.*; /** */ public class EmpThread extends Thread { private Socket socket = null; private PropertyHandler ph = null; private ErrorLogger el = null; private Search s = null; /** * Constructor for the EmpThread object * *@param socket Description of Parameter *@param el Description of the Parameter *@param ph Description of the Parameter *@param s Description of the Parameter */ public EmpThread(Socket socket, ErrorLogger el, PropertyHandler ph, Search s) { super("EmpThread"); this.socket = socket; this.ph = ph; this.el = el; this.s = s; System.out.println("in EmpThread constructor"); } /** * Main processing method for the Project2Thread object */ public void run() { try { System.out.println("Start of thread"); //out goes to client in, in comes from client out PrintWriter out = new PrintWriter(socket.getOutputStream(), true); BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); String inLine = null; String outLine = ""; //instance of project2protocol Protocol p = new Protocol(); outLine = p.processInput(inLine); //System.out.println("outLine: " + outLine); out.println(outLine); System.out.println("Outside while that calls processInput()"); while ((inLine = in.readLine()) != null) { System.out.println("Inside while that calls processInput()"); outLine = p.processInput(inLine); //see what is being output out.println(outLine + " inside"); if (outLine.equalsIgnoreCase("Bye")) { break; } } out.close(); in.close(); socket.close(); //do we print trace or send to errorlogger? } catch (IOException ioe) { ioe.printStackTrace(); } } } // -- end class Thread

I see what you are saying about HashMap. We had to use that in another part of our project. For the class I am working on we are required to use HashSet. The reason being is we want to find the total number of unique tokens. HashSet will no store a tok if it already in the set, correct? I am not even sure that I need to use the iterator.
So i understand the concept of what I need to do just not how to actually do it. I have looked at the api's. They do a good job of explaining the classes but not with any example. Thanks for responding.

I am working on a project and am wondering if anyone can give me some help. I am supposed to use a HashSet to get the unique count of tokens from a file. So far I am not getting a count. How does one iterate through a HashSet and add tokens?
Here is my method that I have developed so far.

public void processToken(String tok) { countTok = new Counter(0); outBuf = new StringBuffer(inFile); Date repDate = new Date(); String runDate = dateForm.format(repDate); //System.out.println(outBuf); /* * number of tokens * add token hashset to get unique tokens then count uniquetokens * time stamp includes name class etc from properties file * output the name of the imnput file get from propertyhandler */ uniqTok = new HashSet(); long totalTime = 0; try { Iterator iter = uniqTok.iterator(); System.out.println("outside while" + iter); while(iter.hasNext()) { System.out.println("iterating through uniqTok hashset " + outBuf); uniqTok.add(tok); size = uniqTok.size(); size = size +1; System.out.println(uniqTok + "inside while"); } System.out.println("Summary File Size " + uniqTok.size()); //System.out.println(runDate); } catch(Exception e) { System.out.println("Error caught in Summary File processToken()"); } }
Any help and/or discussion is appreciated.

Everything worked out pretty good at the end. The reason I did not post my question the file io forum is because I did not realize that there was such a thing until after I had been posting to this forum. Usually I just head right here or to the beginner forum so I never paused to look to see if there were a file io area. Sorry if this caused a problem.....
I hope you were able to finish up your shopping, I still have some left to go, and am not looking forward to the evil crowds....hahaha

Ok I have worked this to being pretty colse to what I need. The only problem left(Ihope) is that not everything I want to be outputted to the orderout file is showing up. The data must be being passed to the super class because the output I am getting hs been calculated, which is done in the super class(Order). I am only getting the extended price with the handling charge added on. What am I not doing that is causing this???HELP. Here is the code for the two classes in question. I think it may have to do with the toString() itself and will keep working on it, bu tI would appreciate a second(or more) set of eyes to look at it...Thanks
package java163.project6; import java.text.*; import java163.util.*; import java.io.*; import java.util.*; /** * class extends order. * */ public class OrderWithCharge extends Order { private static double[] charge = new double[4]; private static int[] qty = new int[4]; double newprice = 0; double total = 0; private double handlingCharge; private int amt; /** * Constructor for the OrderWithCharge object * *@param name customer name *@param id customer id *@param qt quantity ordered *@param price price of item *@param item item name/description */ OrderWithCharge(String name, int id, int qt, double price, String item) { super(name, id, qt, price, item); } /** * Method calls parent class method and overrides and adds fee. * */ public void computePrice() { try { super.computePrice(); super.getQtyOrdered(); String strLine = null; BufferedReader in = new BufferedReader(new FileReader("data/charges.dat")); strLine = in.readLine(); StringTokenizer tok = new StringTokenizer(strLine); int num = tok.countTokens(); int i = 0; boolean eof = false; String str = null; while(!eof) { str = in.readLine(); if(str == null) { eof = true; } else { while(tok.hasMoreTokens()) { qty[i] = Integer.parseInt(tok.nextToken()); charge[i] = Double.parseDouble(tok.nextToken()); ++i; } } } int sub = 3; while(sub >= 0 && qtyOrdered < qty[sub]) { handlingCharge = charge[sub]; --sub; } total = super.getExtendedPrice() + handlingCharge; in.close(); } catch(IOException e) { System.out.println("The error is " + e); } finally{ } } /** * Formats display of total price * *@return String containing formatted total */ public String toString() { DecimalFormat df = new DecimalFormat("$####.00"); StringBuffer sb = new StringBuffer(); super.toString(); sb.append("\n With handling charge : " + df.format(total)); return sb.toString(); } } package java163.project6; import java.text.*; import java163.util.*; import java.io.*; import java.util.*; //Jones 1111 7 12.99 Widget //Smith 1212 12 15.35 Thingamajig //Jackson 2323 5 14.57 Whatchamacallit //Doe 2222 2 13.05 SomethingOrOther public class ProcessOrders{ private static String[] name = new String[4]; private static int[] id = new int[4]; private static int[] qt = new int[4]; private static double[] prc = new double[4]; private static String[] item = new String[4]; public void processOrder(){ try{ BufferedReader in = new BufferedReader(new FileReader("data/orderin.txt")); PrintWriter out = new PrintWriter(new FileWriter("data/orderout.txt")); boolean eof = false; while(!eof) { String line = in.readLine(); if(line == null) { eof = true; } else{ StringTokenizer tok = new StringTokenizer(line); String name = tok.nextToken(); int id = Integer.parseInt(tok.nextToken()); int qt = Integer.parseInt(tok.nextToken()); double prc = Double.parseDouble(tok.nextToken()); String item = tok.nextToken(); OrderWithCharge owc = new OrderWithCharge(name,id,qt,prc,item); owc.setCustName(name); owc.setCustNumber(id); owc.setQtyOrdered(qt); owc.setUnitPrice(prc); owc.setItem(item); owc.computePrice(); System.out.println(owc.toString()); out.println(owc.toString()); } } in.close(); out.close(); } catch(IOException e){ System.out.println("There was an error1 " + e); } // try{ // PrintWriter out = new PrintWriter(new FileWriter("data/orderout.txt")); // for(int x=0;x<4;++x){ // System.out.println(name[x]); // System.out.println(id[x]); // System.out.println(qt[x]); // System.out.println(prc[x]); // System.out.println(item[x]); // out.println(name[x]); // out.println(id[x]); // out.println(qt[x]); // out.println(prc[x]); // out.println(item[x]); // } // out.close(); // } // catch(Exception e){ // System.out.println("There was an error2 " + e); // } } }