It compiles but it errors and I can't figure out why and this is my final!

Question

Hey there,
I am taking a class in Java and its finals time and I have this program due and i am just running into road blocks. I really need some help! It compiles and what not but when you are running the program and you tell it to enter the value of the type of work that was done, it hangs then if you push enter, you get this;
===========================
CIS2110 Project 4
Banach Information Technology Solutions
Weekly Reports
By Alicia Schuster
May 7, 2008
=============================
Input The rate for iHours:50
Input The rate for dHours:80
Input The rate for aHours:100
Please enter the value of the day1
Input the value for cust:222
Input the value for type:1
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.Integer.parseInt(Integer.java:489)
at java.lang.Integer.parseInt(Integer.java:518)
at Pro4.inJob(Pro4Driver.java:172)
at Pro4.procJob(Pro4Driver.java:145)
at Pro4.procday(Pro4Driver.java:100)
at Pro4.appMain(Pro4Driver.java:61)
at Pro4Driver.main(Pro4Driver.java:25)
Here is my code below, what do i need to change? I am about to pull my hair out. SOMEONE PLEASE HELP!
//Title: Project #4 part c
//Version:
//Copyright: Copyright (c) 2008
//Author: Alicia
//Company: Your Company
//Description: Your description
// Preprocessor directive
//import java.io.IOException;
import java.io.BufferedReader;
import java.text.DecimalFormat;
import java.io.*;
public class Pro4Driver
          public static void main(String [] args) throws IOException
               {     Pro4 app;
                    app = new Pro4();
                    app.appMain();
class Pro4
     //Instance (global) data declarations
          float iHours;
          float dHours;
          float aHours;
          float totCharge;
          float totOverCharge;
          float hiCharge;
          float iRate;
          float dRate;
          float aRate;
          int day;
          int hiDay;
          int hiType;
          float dayTotCharge;
          float dayTotOverCharge;
          int cust;
          int type;
          float hours;
          float overCharge;
          float servCharge;
          String numString;
          BufferedReader stdin;
          float num;
          DecimalFormat f6 = new DecimalFormat("$#,###.##");
          DecimalFormat f5 = new DecimalFormat("#,###.##");
     public void appMain() throws IOException
          stdin= new BufferedReader(new InputStreamReader(System.in));
          wkinit();
          outhead();
          inrates();
          procday();
          while (day != 0)
          {     wkout();
          return;
     public void wkinit() throws IOException
     {      iHours = dHours = aHours = 0f;
          totCharge = totOverCharge = hiCharge = 0f;
          return;
     public void outhead() throws IOException
     {     System.out.println("\n===========================");
          System.out.println(" CIS2110 Project 4");
          System.out.println(" Banach Information Technology Solutions");
          System.out.println("Weekly Reports");
          System.out.println(" By Alicia Schuster");
          System.out.println(" May 7, 2008");
          System.out.println("=============================");     
          return;
     public void inrates()throws IOException
          System.out.print("Input The rate for iHours:");
          numString = stdin.readLine();
          iHours = Float.parseFloat(numString);
          System.out.print("Input The rate for dHours:");
          numString = stdin.readLine();
          dHours = Float.parseFloat(numString);
          System.out.print("Input The rate for aHours:");
          numString = stdin.readLine();
          aHours = Float.parseFloat(numString);
          return;
     public void procday()throws IOException
     {     dayInit();
          inDay();
          if (day != 0);
               procJob();
               while (cust != 0)
               outDay();
          return;
     public void wkout() throws IOException
     {     stdin = new BufferedReader (new InputStreamReader(System.in));
          num = (float)Math.PI;
          System.out.println(" The Value of totCharge is:"+
f6.format(totCharge));
          System.out.println("The Value of totOverCharge is:" +
(totOverCharge));
          System.out.println("The Value hiCharge is:" + f6.format
(hiCharge));
          System.out.println("The Value Of hiDay is:" + hiDay);
          System.out.println("The Value of hiType is:" + hiType);
          System.out.println("The Value of iHours is:"+ f6.format(iHours));
          System.out.println("The Value of dHours is:"+ f6.format
(dHours));
          System.out.println("The value of aHours is:"+ f6.format
(aHours));
          return;
     public void dayInit()
     {      dayTotCharge = dayTotOverCharge = 0;
          return;
     public void inDay()throws IOException
          System.out.print("Please enter the value of the day");
          numString = stdin.readLine();
          day = Integer.parseInt(numString);
     public void procJob() throws IOException
     {     inCust();
          if (cust != 0);
               inJob();
               updateCharges();
               updateSums();
               updateHi();
               outJob();
          return;
     public void outDay()
     {     System.out.println("The value of the day is:" + day);
          System.out.println("The value of dayTotCharge is:"+
f6.format(dayTotCharge));
          System.out.println("The Value of dayTotOverCharge is:"+
f6.format(dayTotCharge));
          return;
     public void inCust() throws IOException
     {     System.out.print("Input the value for cust:");
          cust = Integer.parseInt(stdin.readLine());
          return;
     public void inJob()throws IOException
     {     System.out.print("Input the type of work they did:");
          numString = stdin.readLine();
          type = Integer.parseInt(stdin.readLine());
          System.out.print("Input the value for hours :");
          numString = stdin.readLine();
          hours = Float.parseFloat(numString);
          return;
     public void updateCharges()
     {     float overCharge = 0f;
          if (type == iHours)
               iHours = iHours + hours;
               servCharge = hours * iRate;
               if (day > 5)
                    overCharge = (float).5 * servCharge;
               if (hours > 40)
                    overCharge = overCharge + .5f *(hours -
40)*iRate;
               servCharge = servCharge + overCharge;
               else
                    if (type == dHours)
               dHours = dHours + hours;
               servCharge = hours * dRate;
               if (day > 5)
                    overCharge = .5f * servCharge;
               if (hours > 40)
                    overCharge = overCharge + .5f *(hours -
40) * dRate;
               servCharge = servCharge + overCharge;
          else
                    if (type == aHours)
               aHours = aHours + hours;
               servCharge = hours * aRate;
               if (day > 5)
                    overCharge = .5f * servCharge;
               if (hours > 40)
                    overCharge = overCharge + .5f * (hours -
40) * aRate;
               servCharge = servCharge + overCharge;
          else
               System.out.print("service-type-input-code-error-message");
               return;
     public void updateSums()
     {     dayTotCharge = dayTotCharge + servCharge;
          dayTotOverCharge = dayTotOverCharge + overCharge;
          totCharge = totCharge + servCharge;
          totOverCharge = totOverCharge + overCharge;
          return;
     public void updateHi()
          if (servCharge > hiCharge)
               hiCharge = servCharge;
               hiDay = day;
               hiType = type;
          return;
     public void outJob()
     {     System.out.println("The value of the cust is:"+ f5.format(cust));
          System.out.println("The value of the type is:"+ f5.format(type));
          System.out.println("The number of the hours is:"+ f5.format(hours));
          System.out.println("The value of the servCharge is:"+ f6.format(servCharge));
          System.out.println("The value of the overCharge is:"+ f6.format(overCharge));
          return;
}

Answer 1

java.lang.NumberFormatException:You entered something that wasn't a number - which is exactly what you said you did.
So you need to do something about that.