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Thread: Beginner Java Student Having Some Trouble

  1. #1
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    Question Beginner Java Student Having Some Trouble

    The "Add Lumber" and "Add Customer" sections aren't working correctly. Eclipse is telling me that I have not added the while statement. Also, I added a comment saying "Need to find out which one the customer wants." I need to ask the "customer" if they want to edit the price or stock level. Any advice would be appreciated. I'm almost done with the program I just need these errors/problems fixed. Thanks.

    package Lumber;
     
    import javax.swing.JOptionPane;
    import java.io.*;
    import java.util.*;
    import java.text.*;
     
    public class Lumber
    {
    public static void main(String[] args) 
    	{
    	int count=-1,c;
    	int place=-1,l;
    	int [] number = new int [100];
    	String [] lastname = new String [100];
    	String [] firstname = new String [100];
    	String [] address = new String [100];
    	double [] creditlimit = new double [100];
    	int [] code = new int [100];
    	String [] type = new String [100];
    	double [] price = new double [100];
    	int [] stocklevel = new int [100];
     
    		int selection;
    		count=start_program(number,lastname,firstname,address,creditlimit,count);
    		place=start_program1(code,type,price,stocklevel,place);
    		selection =menu();
    	     while(selection!=4)
    	     {
    	    	    if (selection == 1)
    	    	       	Modify_Customer(number,lastname,firstname,address,creditlimit,count);
    	    	      else 
    	    	    	  if (selection == 2)
    	    	      	   	  Modify_Lumber(code,type,price,stocklevel,place);
    	    	         else 
    	    	        	 if (selection == 3)
    	    	               Report(count,place,number,lastname,firstname,address,creditlimit,code,type,price,stocklevel);
    	    	  selection =menu();
    	     }//end of while loop
    	     exit_program(number,lastname,firstname,address,creditlimit,count);
    	     exit_program1(code,type,price,stocklevel,place);
    	     System.exit(0);
    	}// end of main 
     
    		public static int menu()
    		{
    			  String mnumber;
    			  int number;
    			  String output = "Chestnut Ridge lumber Comapny" + " \n " + " \n " +
    		      "1. Add/Modify Customer Data " + " \n " +
    		      "2. Add/Modify Lumber Data " + " \n " +
    		      "3. Report Section " + " \n " +
    		      "4. Exit the System" + " \n" + " \n " +
    		      "Please make your selection  >";
    		       mnumber = JOptionPane.showInputDialog(null, output, " ",
    		                                        JOptionPane.QUESTION_MESSAGE);
    		       number=Integer.parseInt(mnumber);
    		       return number;
    		     } 
     
    		public static void Modify_Customer(int[]number,String[]lastname,String[]firstname,String[]address,double[]creditlimit,int count)
    		{
    			String Choice = "";
     
    			 String reportChoices = "Customer Information Menu" + "\n" + "1. Add Customer" + "\n" + "2. Delete Customer" + "\n" + "3. Modify Customer";
     
    			 Choice= JOptionPane.showInputDialog(null,reportChoices,"",JOptionPane.QUESTION_MESSAGE);
     
    			 int i;
     
    			 if (Choice.equals("1")){
    				 System.out.println("Add Customer:");
     
    				 String more = "Y/N";
    				do{  				 
    				 for (i=0; i<= count; i++) {
    					 String ID_Number,last_name, first_name, Address;
    					 int  ID_number;
    					 String Credit_Limit;
    					 count=count+1;
     
    					 ID_Number = JOptionPane.showInputDialog(null,"Enter The New Customer ID:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 ID_number = Integer.parseInt(ID_Number);
    					 last_name = JOptionPane.showInputDialog(null,"Enter The New Customer's Last Name:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 first_name = JOptionPane.showInputDialog(null,"Enter The New Customer's First Name:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 Address = JOptionPane.showInputDialog(null,"Enter The New Customer's City:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 Credit_Limit = JOptionPane.showInputDialog(null,"Enter The New Customer's Credit Limit:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					  double Cred_Lim = Double.parseDouble(Credit_Limit);
     
    					number[count] = ID_number;
    				    firstname[count] = first_name;
    					lastname[count] = last_name;
    					address[count] = Address;
    					creditlimit[count] = Cred_Lim;
    				 }while (more.equals("Y"));
    				}
    			 }
     
    			 else if (Choice.equals("2")){
    				 System.out.println("Delete Customer:");
    				  {
    					//Ask for customer ID
    						String customerID = JOptionPane.showInputDialog(null,"Enter The Customer ID:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    						int cust_ID = Integer.parseInt(customerID);
     
    						//Search array
    						for (i=0; i <= count; i++) {
    							if (number[i] == cust_ID) {
     
    								for (int p = i; p <= count; p++){
    								number[p] = number[p-1];
    							    firstname[p] = firstname[p-1];
    								lastname[p] = lastname[p-1];
    								address[p] = address[p-1];
    								creditlimit[p] = creditlimit[p-1];
    								}
    			 }
    				  }
    			 }
    			 }
     
    		 else if (Choice.equals("3")){
    			 System.out.println("Modify Customer:");
    			//Ask for customer ID
    				String customerID = JOptionPane.showInputDialog(null,"Enter The Customer ID:" +
    						"",JOptionPane.QUESTION_MESSAGE);
    				int cust_ID = Integer.parseInt(customerID);
     
    				//Search array
    				for (i=0; i <= count; i++) {
    					if (number[i] == cust_ID) {
    						String input = JOptionPane.showInputDialog(null,"Enter The New Customer's Credit Limit:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    						int ID_Replace = Integer.parseInt(input);
    						creditlimit[i] = ID_Replace;
    		 }
    				}
    		 }
    			}
     
    		public static void Modify_Lumber(int[]code,String[]type,double[]price,int[]stocklevel,int place)
    		{
    			String Choice = "";
     
    			 String reportChoices = "Lumber Information Menu" + "\n" + "1. Add Lumber Item" + "\n" + "2. Delete Lumber Item" + "\n" + "3. Modify Lumber Item";
     
    			 Choice= JOptionPane.showInputDialog(null,reportChoices,"",JOptionPane.QUESTION_MESSAGE);
     
    			 int i;
     
    			 int count;
    			if (Choice.equals("1")){
    				 System.out.println("Add Lumber Item:");
     
    				 String more = "Y/N";
    				do{  				 
    				 for (i=0; i<= place; i++) {
    					 String Lumber_Code,Lumber_Type, Lumber_Price, Lumber_Stock;
    					 int  Lumber_code, Lumber_stock;
    					 Double Lumber_price;
    					 String Credit_Limit;
    					 place=place+1;
     
    					 Lumber_Code = JOptionPane.showInputDialog(null,"Enter The New Lumber's Code:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 Lumber_code = Integer.parseInt(Lumber_Code);
    					 Lumber_Type = JOptionPane.showInputDialog(null,"Enter The New Lumber's Type:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 Lumber_Price = JOptionPane.showInputDialog(null,"Enter The New Lumber's Price:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 Lumber_price = Double.parseDouble(Lumber_Price);
    					 Lumber_Stock = JOptionPane.showInputDialog(null,"Enter The New Lumber's Stock Availability:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    					 Lumber_stock = Integer.parseInt(Lumber_Stock);
     
    					code[count] = Lumber_code;
    				    type[count] = Lumber_Type;
    					price[count] = Lumber_price;
    					stocklevel[count] = Lumber_stock;
    				 }while (more.equals("Y"));
    				}
    			 }
     
    			 else if (Choice.equals("2")){
    				 System.out.println("Delete Lumber Item:");
    				  {
    					//Ask for Lumber code
    						String LumberCode = JOptionPane.showInputDialog(null,"Enter The Lumber Item's Code:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    						int lumb_Code = Integer.parseInt(LumberCode);
     
    						//Search array
    						for (i=0; i <= count; i++) {
    							if (code[i] == lumb_Code) {
     
    								for (int p = i; p <= count; p++){
    								code[p] = code[p-1];
    							    type[p] = type[p-1];
    								price[p] = price[p-1];
    								stocklevel[p] = stocklevel[p-1];
    								}
    			 }
    				  }
    			 }
    			 }
     
    		 else if (Choice.equals("3")){
    			 System.out.println("Modify Lumber Item:");
    			//Ask for lumber code
    			 String LumberCode = JOptionPane.showInputDialog(null,"Enter The Lumber Item's Code:" +
    						"",JOptionPane.QUESTION_MESSAGE);
    				int lumb_Code = Integer.parseInt(LumberCode);
     
    				//Search array
    				for (i=0; i <= count; i++) {
    					if (code[i] == lumb_Code) {
    						//Need to find how to ask which one customer wants
    						String input = JOptionPane.showInputDialog(null,"Enter The New Lumber's Price:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    						int Price_Replace = Integer.parseInt(input);
    						price[i] = Price_Replace;
    						String input2 = JOptionPane.showInputDialog(null,"Enter The New Lumber's Stock Level:" +
    								"",JOptionPane.QUESTION_MESSAGE);
    						int Stock_Replace = Integer.parseInt(input);
    						stocklevel[i] = Stock_Replace;
    		 }
    				}
    		 }
    			}
     
    		public static void Report(int count,int place,int [] number,String [] lastname,String [] firstname,String [] address,double [] creditlimit,int [] code,String [] type,double [] price,int [] stocklevel)
    		{
    			String Choice = "";
     
    			while (!(Choice.equals("9"))){
    			 String reportChoices = "Reports" + "\n" + "1. All Customer Info" + "\n" + "2. All Lumber Info" + "\n" + "3. Current Value of Lumber Inventory" + "\n" + "4. All Customers Above Specific Credit Limit" + "\n" + "5. Report 5" + "\n" + "6. Report 6"
    			 + "\n" + "7. Report 7" + "\n" + "8. Report 8" + "\n" + "9. Exit report Menu";
     
    			 Choice= JOptionPane.showInputDialog(null,reportChoices,"",JOptionPane.QUESTION_MESSAGE);
     
    			 int i;
     
    			 if (Choice.equals("1")){
    				 System.out.println("All Customer Info:");
    				 for (i=0; i<= count; i++) {
    					 System.out.println(number[i] + "" + lastname[i] + ", " + firstname[i] + ": " + address[i] + " - Credit Score: " + creditlimit[i]);
    				 }//for end
    				 System.out.println(" ");
    			 }//if end
    			 else if (Choice.equals("2")){
    				 System.out.println("All Lumber Info:");
    				 for (i=0; i<= place; i++) {
    					 System.out.println(code[i] + "" + type[i] + ", " + price[i] + ": " + " - In Stock: " + stocklevel[i]);
    				 }//for end
    				 System.out.println(" ");
    			 }//else if end
     
    			 else if (Choice.equals("3")){
    				 double lumbinventory = 0;
     
    				 for (i=0; i<= place; i++){
    					 lumbinventory += (price[i] * stocklevel[i]);
    				 }//end for
    				 System.out.println("Current Value of Lumber Inventory: $" + lumbinventory + "\n");
    				 System.out.println(" ");
    			 }
    			 else if (Choice.equals("4")){
    				 double credlimit;
    				 String input;
     
    				 //Prompt for credit score
    				 input= JOptionPane.showInputDialog(null, "Enter Value of Credit Score:" + "", JOptionPane.QUESTION_MESSAGE);
    				 credlimit = Double.parseDouble(input);
     
    				 System.out.println("Customers Above A Credit Limit of " + credlimit +":");
     
    				 for (i=0; i <= count; i++){
    					 if (creditlimit[i] > credlimit){
    						 System.out.println(lastname[i] + ", " + firstname[i] + ": " + creditlimit[i]);
    					 }//end for
    				 }//end if
    				 System.out.println(" ");
     
    			 }
    			 else if (Choice.equals("5")){
    				 int inputcode;
    				 String input;
     
    				 //Prompt for lumber code
    				 input= JOptionPane.showInputDialog(null, "Enter the Lumber Code:" + "", JOptionPane.QUESTION_MESSAGE);
    				 inputcode = Integer.parseInt(input);
     
    				 System.out.println("Lumber information for code number " + input +":");
     
    				 for (i=0; i <= count; i++){
    					 if (code[i] == inputcode){
    						 System.out.println(type[i] + ", " + price[i] + ", " + stocklevel[i]);
    			 }
    				 }
    				 System.out.println(" ");
    			 }
     
    			 else if (Choice.equals("6")){
    				  String input;
     
    				 //Prompt for address
    				 input= JOptionPane.showInputDialog(null, "Enter a Customer's City of Residence:" + "", JOptionPane.QUESTION_MESSAGE);
     
    				 System.out.println("Customer information for " + input +":");
     
    				 for (i=0; i <= count; i++){
    					 if (address[i].equalsIgnoreCase(input)){
    						 System.out.println(number[i] + "," + lastname[i] + ", " + firstname[i] + "," + creditlimit[i]);
    			 }
    				 }
    				 System.out.println(" ");
    				 }
     
    			 else if (Choice.equals("7")) {
    					String customerID = "", first = "", last = "", items = "", itemName = "", report = "", addItem = "";
    					int cust_ID = 0, itemChosen = 0, item_stock = 0, quantity = 0;
    					double item_price = 0, cost = 0, item_cost = 0, total = 0, tax = 0;
     
    					//Ask for customer ID
    					customerID =  JOptionPane.showInputDialog(null,"Enter The Customer ID:" +
    							"",JOptionPane.QUESTION_MESSAGE);
    					cust_ID = Integer.parseInt(customerID);
     
    					//Search array
    					for (i=0; i <= count; i++) {
    						if (number[i] == cust_ID) {
     
    							//Store first and last name
    							first = firstname[i];
    							last = lastname[i];
     
    							do {
     
    							items ="LumberInventory: \n\n";
     
    							int placement = 19;
    							//Create a variable with lumber options
    							for (i=0; i <= placement; i++) {
    								items += "Code: " + code[i] + "       Type: " + type[i] + "       Price: $" + price[i] +
    								"       Amount In Stock: " + stocklevel[i] + "\n";
    							}
     
    							items += "\n\n" + "Please enter the lumber code you wish to purchase:";
     
    							//Prompt for item ID
    							String input = JOptionPane.showInputDialog(null,items + "",JOptionPane.QUESTION_MESSAGE);
    							itemChosen = Integer.parseInt(input);
     
    							//Find the item in the array
    							for (i=0; i <= placement; i++) {
    								if (code[i] == itemChosen) {
    									item_price = price[i];
    									item_stock = stocklevel[i];
    									itemName = type[i];
    								}
    							}
     
    							input =  JOptionPane.showInputDialog(null,"How many " + itemName + "'s would you like to purchase? In Stock: " +
    									item_stock + "  @ $" + item_price +"/each",JOptionPane.QUESTION_MESSAGE);
    							quantity = Integer.parseInt(input);
     
    							if (quantity <= item_stock) {
    								item_cost = item_price * quantity;
    								cost += item_cost;
     
    								report += quantity + "- " + itemName + " @  $" + item_price + "/each:  $" + item_cost + "\n";
     
    							} else {
    								do {
     
    									input =  JOptionPane.showInputDialog(null,"ERROR: There is not enough in stock \n\n" +" How many " 
    											+ itemName + "'s would you like to purchase? In Stock: " + item_stock,JOptionPane.QUESTION_MESSAGE);
    									quantity = Integer.parseInt(input);
    								} while (quantity > item_stock);//End while
     
    								item_cost = item_price * quantity;
    								cost += item_cost;
     
    								report += quantity + "- " + itemName + " @  $" + item_price + "/each:  $" + item_cost + "\n";
    							}//End Else
     
    							//Update stock level
    							for (i=0; i <= placement; i++) {
    								if (code[i] == itemChosen) {
    									stocklevel[i] = stocklevel[i] - quantity;
    								}
    							}
     
    							//Prompt for another item
    							addItem =  JOptionPane.showInputDialog(null,"Would you like to add another item? (Y/N):" +
    									"",JOptionPane.QUESTION_MESSAGE);
     
    							} while (addItem.equalsIgnoreCase("Y"));
     
    							//Output sales report
    							System.out.println("Sales Report for " + last + ", " + first + ": \n");
    							System.out.println(report);
    								//Calculate tax
    								tax = cost * 0.07;
    							System.out.println("Sales Tax: $" + tax);
    								//Calculate total price
    								total = cost + tax;
    							System.out.println("Total Price: $" + total);
     
    						}//End If
    					} //End for
    					System.out.println(" ");
    			 }
     
    			 else if (Choice.equals("8")){
    				 int inputPrice;
    				 String input;
     
    				 //Prompt for lumber code
    				 input= JOptionPane.showInputDialog(null, "Enter the Desired Lumber Price (ex. 1, 2, 3):" + "", JOptionPane.QUESTION_MESSAGE);
    				 inputPrice = Integer.parseInt(input);
     
    				 System.out.println("Information for Lumber Priced Less Than $" + input +":");
     
    				 for (i=0; i <= count; i++){
    					 if (price[i] < inputPrice){
    						 System.out.println(code[i] + "" + type[i] + ", " + price[i] + ": " + " - In Stock: " + stocklevel[i]);
    			 }
    				 }
    				 System.out.println(" ");
    			 }
    			}
    		}
     
     
    		public static int start_program(int[]number,String[]lastname,String[]firstname,String[]address,double[]creditlimit,int count)
    		  {
    	        String newLine;
    	          try
    	          {
    	            //define a file variable for Buffered read
    	             BufferedReader Customer_file = new BufferedReader(new FileReader("customer.dat"));
    	             //read lines in file until there are no more lines in the file to read
    	             while ((newLine = Customer_file.readLine()) != null)
    	               {
    	                 //there is a "#" between each data item in each line
    	                  StringTokenizer delimiter = new StringTokenizer(newLine,"#");
    	                  count=count+1;
    	                  number[count] =Integer.parseInt(delimiter.nextToken());
    	                  lastname[count] = delimiter.nextToken();
    	                  firstname[count] =delimiter.nextToken();
    	                  address[count] =delimiter.nextToken();
    	                  creditlimit[count] = Double.parseDouble(delimiter.nextToken());
    	                }//while loop
    	               Customer_file.close();
    	            }//end try
    	        catch (IOException error)
    	          {
    	          //there was an error on the file writing
    	          System.out.println("Error on file read " + error);
    	          }//error on read
    	        return count;
    	  }//end start_program
     
    		public static int start_program1(int[]code,String[]type,double[]price,int[]stocklevel,int place)
    		  {
    	        String newLine;
    	          try
    	          {
    	            //define a file variable for Buffered read
    	             BufferedReader Lumber_file = new BufferedReader(new FileReader("lumber.dat"));
    	             //read lines in file until there are no more lines in the file to read
    	             while ((newLine = Lumber_file.readLine()) != null)
    	               {
    	                 //there is a "#" between each data item in each line
    	                  StringTokenizer delimiter = new StringTokenizer(newLine,"#");
    	                  place=place+1;
    	                  code[place] =Integer.parseInt(delimiter.nextToken());
    	                  type[place] = delimiter.nextToken();
    	                  price[place] = Double.parseDouble(delimiter.nextToken());
    	                  stocklevel[place] =Integer.parseInt(delimiter.nextToken());
    	                }//while loop
    	               Lumber_file.close();
    	            }//end try
    	        catch (IOException error)
    	          {
    	          //there was an error on the file writing
    	          System.out.println("Error on file read " + error);
    	          }//error on read
    	        return place;
    	  }//end start_program
     
     
     
    		public static void exit_program(int[]number,String[]lastname,String[]firstname,String[]address,double[]creditlimit,int count)
    		{
    			try
    			      {
    			      BufferedWriter Customer_file = new BufferedWriter(new FileWriter("customer.dat"));
    						for (int i = 0; i<=count; ++i)
    			              {
    			                //put "#" between each data item in the file
    			            	Customer_file.write(number[i] + "#" + lastname[i] + "#" +firstname[i]+ "#" +address[i] + "#" +creditlimit[i]);
    			                //write a new line in the file
    			            	Customer_file.newLine();
    			              }//for loop
    			            Customer_file.close();
    			          }//end try
    			        catch (IOException error)
    			          {
    			            //there was an error on the write to the file
    			             System.out.println("Error on file write " + error);
    			          }
    		}
     
    			public static void exit_program1(int[]code,String[]type,double[]price,int[]stocklevel,int place) {
    			{
    			try
    		      {
    		      BufferedWriter Lumber_file = new BufferedWriter(new FileWriter("lumber.dat"));
    					for (int i = 0; i<=place; ++i)
    		              {
    		                //put "#" between each data item in the file
    						Lumber_file.write(code[i] + "#" + type[i] + "#" +price[i]+ "#" +stocklevel[i]);
    		                //write a new line in the file
    						Lumber_file.newLine();
    		              }//for loop
    					Lumber_file.close();
    		          }//end try
    		        catch (IOException error)
    		          {
    		            //there was an error on the write to the file
    		             System.out.println("Error on file write " + error);
    		          }
    			    }
    			}
     
    }//end of class


  2. #2
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    Default Re: Beginner Java Student Having Some Trouble

    That's way too much code for us to wade through. I suggest throwing together an SSCCE that demonstrates the problem, that way we can copy and paste your program to easily see what you're talking about.

    Also, your formatting makes it hard to tell what's what. I would fix your indentation so that it's more obvious where a method/loop/statement begins and ends. Are you sure everything ends where you think it does?

    Also also, you should copy and paste the full text of the error message, including the stack trace (for your SSCCE, along with which lines are on the line numbers listed in the stack trace).
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    Last Post: May 3rd, 2011, 09:48 AM