variable to hold the size of the array

[Reno Madrigal]

I am stuck on this portion of my assignment please help me. Here is what I have so far,

 
//DECLARE PET SERVICES CLASS
class PetService
{
 
private String servicecode = " ";
private String servicename = " ";
private String description = " ";
private String servicetype = " ";
private String double price = "0.0";
private StaugIO io = new StaugIO();
 
//CONSTRUCTOR
 
public PetService()
{
}
 
//END CONSTRUCTOR
 
//SET PET SERVICES NAME
public void setServiceCode()
{
servicecode = io.readString("Enter the service code");
}//END setServiceCode()
 
//SET SERVICE NAME
public void setServiceName()
{
servicename = io.readString("Enter the service name");
}//END setServiceName()
 
//SET SERVICE DESCRIPTION
public void setServiceDescription()
{
servicedescription = io.readString("Enter the service description");
}//END setServiceDescription
 
//SET SERVICE TYPE
public void setServiceType()
{
servicetype = io.readString("Enter the service type");
}//END setServiceType()
 
//SET SERVICE PRICE
public void SetPrice()
{
price = io.readDouble("Enter the service price");
}//END setPrice()
 
//GET PET SERVICE NAME
public String getServiceCode()
{
return serviceode;
}//END getServiceCode()
 
//GET SERVICE NAME
public String getServiceName()
{
return servicename;
}//END getServiceName()
 
//GET SERVICE DESCRIPTION
public String getServiceDescription()
{
return servicedescription;
}//END getServiceDescription
 
//GET SERVICE TYPE
public String getServiceType()
{
return servicetype;
}//END getServiceType
 
//GET SERVICE PRICE
public String getPrice()
{
return price;
}//END getPrice
 
}//END PetService CLASS
 

My question is how do I put in the size , i know after PetService class I will use

class ServicesArray

which will use a variable to hold the size of the array, also i will null reference using

PetService[] servicesArray;


Is what I am looking for simply

 
servicesArray = new PetServices[size];
 

[marc weber]

Originally posted by Reno Madrigal:
...Is what I am looking for simply

 
servicesArray = new PetServices[size];
 

Yes, assuming "size" represents an int.

[Reno Madrigal]

Okay I finished a rough draft of my coding but I am getting a few identifier expected errors and I know that they are there because that code needs to be in a class but where am I going wrong on this?

/**
 * @(#)MadrigalRPA6.java
 *
 * MadrigalRPA6 application
 *
 * @author 
 * @version 1.00 2007/11/5
 */
 
//DECLARE PET SERVICES CLASS
class PetService
{
 
private String servicecode = " ";
private String servicename = " ";
private String description = " ";
private String servicetype = " ";
private double price = "0.0";
private StaugIO io = new StaugIO();
 
//CONSTRUCTOR
 
public PetService()
{
}
 
//END CONSTRUCTOR
 
//SET PET SERVICES NAME
public void setServiceCode()
{
servicecode = io.readString("Enter the service code");
}//END setServiceCode()
 
//SET SERVICE NAME
public void setServiceName()
{
servicename = io.readString("Enter the service name");
}//END setServiceName()
 
//SET SERVICE DESCRIPTION
public void setServiceDescription()
{
servicedescription = io.readString("Enter the service description");
}//END setServiceDescription
 
//SET SERVICE TYPE
public void setServiceType()
{
servicetype = io.readString("Enter the service type");
}//END setServiceType()
 
//SET SERVICE PRICE
public void SetPrice()
{
price = io.readDouble("Enter the service price");
}//END setPrice()
 
//GET PET SERVICE NAME
public String getServiceCode()
{
return servicecode;
}//END getServiceCode()
 
//GET SERVICE NAME
public String getServiceName()
{
return servicename;
}//END getServiceName()
 
//GET SERVICE DESCRIPTION
public String getServiceDescription()
{
return servicedescription;
}//END getServiceDescription
 
//GET SERVICE TYPE
public String getServiceType()
{
return servicetype;
}//END getServiceType
 
//GET SERVICE PRICE
public String getPrice()
{
return price;
}//END getPrice
 
}//END PetService CLASS
 

class ServicesArray
{
servicesArray = new PetServices[size];

PetServices[] servicesArray;  // Code the reference to the null array.


//READ NUMBER OF SERVICES TO STORE
int number = io.readInt("How many services do you have to enter?");
 
//DYNAMICALLY DEFINE ARRAY OF PET SERVICE OBJECTS
 
PetService services[] = new Service[number];
 
//DEFINE PET SERVICE OBJECTS AND FILL ARRAY OF OBJECTS
//WITH PET SERVICE DATA
for(int i = 0; i < number; ++i)
{
services[i] = new Service();
services[i].setServiceCode();
services[i].setServiceName();
services[i].setServiceDescription();
services[i].setServiceType();
services[i].setPrice();
}//END FOR
 
//BUILD OUTPUT STRING FROM ARRAY OF PET SERVICE OBJECTS
//AND DISPLAY PET SERVICES ONE AT A TIME
for(int i = 0; i < number; ++i)
{
petserviceInfo = "PET SERVICE  " + (i+1) + "   DATA\n";
petserviceInfo += "\nSERVICE CODE: " + services[i].getServiceCode() + "\n"
+ "SERVICE: " + services[i].getServiceName() + "\n"
+ "DESC: " + services[i].getServiceDescription() + "\n"
+ "TYPE: " + services[i].getServiceType() + "\n"
+ "PRICE: " + services[i].getPrice() + "\n";
//DISPLAY PET SERVICE DATA
io.writeInfo(petserviceInfo);
}//END FOR
}//END ServicesArray CLASS



public class MadrigalRPA6
{
     public static void main(String[]args)
      {
            PetService service = new PetService();
            
       }//END main()
}//END MADRIGALRPA6 CLASS
 

[marc weber]

Originally posted by Reno Madrigal:
... I am getting a few identifier expected errors and I know that they are there because that code needs to be in a class but where am I going wrong on this?...

I think you mean because the code needs to be in a method. Start by correcting those errors. You need to try to get this to compile before moving forward.

[Reno Madrigal]

I feel hopeless because when I move 1 thing around or something i get like 29 errors, yet if i leave it alone i get like 3 errors, I am just really confused at what I should do next, It wont compile correctly because of my errors here is the latest log with my code:

 /**
 * @(#)MadrigalRPA6.java
 *
 * MadrigalRPA6 application
 *
 * @author 
 * @version 1.00 2007/11/5
 */
 
//DECLARE PET SERVICES CLASS
class PetService
{
 
private String serviceCode = " ";
private String serviceName = " ";
private String serviceDescription = " ";
private String serviceType = " ";
private double price = 0.00;
private StaugIO io = new StaugIO();
 
//CONSTRUCTOR
 
public PetService()
{
}
 
//END CONSTRUCTOR
 
//SET PET SERVICES NAME
public void setServiceCode()
{
serviceCode = io.readString("Enter the service code");
}//END setServiceCode()
 
//SET SERVICE NAME
public void setServiceName()
{
serviceName = io.readString("Enter the service name");
}//END setServiceName()
 
//SET SERVICE DESCRIPTION
public void setServiceDescription()
{
serviceDescription = io.readString("Enter the service description");
}//END setServiceDescription
 
//SET SERVICE TYPE
public void setServiceType()
{
serviceType = io.readString("Enter the service type");
}//END setServiceType()
 
//SET SERVICE PRICE
public void SetPrice()
{
price = io.readDouble("Enter the service price");
}//END setPrice()
 
//GET PET SERVICE NAME
public String getServiceCode()
{
return serviceCode;
}//END getServiceCode()
 
//GET SERVICE NAME
public String getServiceName()
{
return serviceName;
}//END getServiceName()
 
//GET SERVICE DESCRIPTION
public String getServiceDescription()
{
return serviceDescription;
}//END getServiceDescription
 
//GET SERVICE TYPE
public String getServiceType()
{
return serviceType;
}//END getServiceType
 
//GET SERVICE PRICE
public String getPrice()
{
return price;
}//END getPrice
 
}//END PetService CLASS
 

class ServicesArray
{

 

PetService[] servicesArray;  // Code the reference to the null array.

//CONSTRUCTOR
 
public ServicesArray()
{
}
 
//END CONSTRUCTOR
 
public void getSize()
{
servicesArray = new PetServices[size];
//READ NUMBER OF SERVICES TO STORE
int size = io.readInt("How many services do you have to enter?");
 
//DYNAMICALLY DEFINE ARRAY OF PET SERVICE OBJECTS
 
PetService services[] = new Service[size];
 
//DEFINE PET SERVICE OBJECTS AND FILL ARRAY OF OBJECTS WITH PET SERVICE DATA
 
for(int i = 0; i < number; ++i)
{
services[i] = new Service();
services[i].setServiceCode();
services[i].setServiceName();
services[i].setServiceDescription();
services[i].setServiceType();
services[i].setPrice();
}//END FOR
 
//BUILD OUTPUT STRING FROM ARRAY OF PET SERVICE OBJECTS
//AND DISPLAY PET SERVICES ONE AT A TIME
for(int i = 0; i < number; ++i)
{
PetServiceInfo = "PET SERVICE  " + (i+1) + "   DATA\n";
PetServiceInfo += "\nSERVICE CODE: " + services[i].getServiceCode() + "\n"
+ "SERVICE: " + services[i].getServiceName() + "\n"
+ "DESC: " + services[i].getServiceDescription() + "\n"
+ "TYPE: " + services[i].getServiceType() + "\n"
+ "PRICE: " + services[i].getPrice() + "\n";
//DISPLAY PET SERVICE DATA
io.writeInfo(petserviceInfo);
}//END FOR
}//END getSize()
}//END ServicesArray CLASS


public class MadrigalRPA6
{
     public static void main(String[]args)
      {
            PetService service = new PetService();
            
       }//END main()
}//END MADRIGALRPA6 CLASS
   

Here are my errors:

------------------Configuration: MadrigalRPA6 - JDK version 1.6.0_02 <Default> - <Default>--------------------
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:19: cannot find symbol
symbol : class StaugIO
location: class PetService
private StaugIO io = new StaugIO();
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:19: cannot find symbol
symbol : class StaugIO
location: class PetService
private StaugIO io = new StaugIO();
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:86: incompatible types
found : double
required: java.lang.String
return price;
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:109: cannot find symbol
symbol : class PetServices
location: class ServicesArray
servicesArray = new PetServices[size];
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:109: cannot find symbol
symbol : variable size
location: class ServicesArray
servicesArray = new PetServices[size];
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:111: cannot find symbol
symbol : variable io
location: class ServicesArray
int size = io.readInt("How many services do you have to enter?");
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:115: cannot find symbol
symbol : class Service
location: class ServicesArray
PetService services[] = new Service[size];
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:119: cannot find symbol
symbol : variable number
location: class ServicesArray
for(int i = 0; i < number; ++i)
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:121: cannot find symbol
symbol : class Service
location: class ServicesArray
services[i] = new Service();
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:126: cannot find symbol
symbol : method setPrice()
location: class PetService
services[i].setPrice();
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:131: cannot find symbol
symbol : variable number
location: class ServicesArray
for(int i = 0; i < number; ++i)
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:133: cannot find symbol
symbol : variable PetServiceInfo
location: class ServicesArray
PetServiceInfo = "PET SERVICE " + (i+1) + " DATA\n";
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:134: cannot find symbol
symbol : variable PetServiceInfo
location: class ServicesArray
PetServiceInfo += "\nSERVICE CODE: " + services[i].getServiceCode() + "\n"
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:140: cannot find symbol
symbol : variable petserviceInfo
location: class ServicesArray
io.writeInfo(petserviceInfo);
^
E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:140: cannot find symbol
symbol : variable io
location: class ServicesArray
io.writeInfo(petserviceInfo);
^
15 errors

Process completed.

[Henry Wong]

I feel hopeless because when I move 1 thing around or something i get like 29 errors, yet if i leave it alone i get like 3 errors, I am just really confused at what I should do next, It wont compile correctly because of my errors here is the latest log with my code:

Generally, the thing to do is to fix the first few errors, and then recompile. The reason is because errors tend to chain react -- it just takes one error to cause other errors. So... whether you have 29 errors or 3 errors, just fix the first few and recompile.

Anyway, the first error...

E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:19: cannot find symbol
symbol : class StaugIO
location: class PetService
private StaugIO io = new StaugIO();

States that it doesn't know what the StaugIO class is -- which I assume is a class that you got from your instructor. Is this class in your classpath? and if it is, did you import the package that it is in?

Henry

[Reno Madrigal]

Yes I always do the same thing for each assignment which is right click my Assignment and "add existing directory" and then i locate my staugIO class from my jumpdrive

[Henry Wong]

Originally posted by Reno Madrigal:
Yes I always do the same thing for each assignment which is right click my Assignment and "add existing directory" and then i locate my staugIO class from my jumpdrive

Well, check it again, because that's the error. Either (1) it isn't in your classpath, (2) you didn't import the package, or (3) you mis-spelled, or have the wrong case, for the class.

We can't really tell, because we don't have the class here.

Henry

[Reno Madrigal]

it just doesnt make sense because i ran my other programs that are on the same drive and use the same staugio and they dont come up with errors, even my src txt reads this:

E:\MadrigalR\MadrigalRPA6\staugIO\StaugIO.java

and that is correct

I guess i can try on my class computer, can we go to the next error?

[Reno Madrigal]

i guess this would help if i added this in my code

 import staugIO.StaugIO;   

that fixed the problem so now on to my other errors, sorry

[Henry Wong]

I guess i can try on my class computer, can we go to the next error?

Like I mentioned, errors tend to chain react -- fix the first few and recompile. Going to the next one may work, or you can spend hours on a problem that was caused by the previous problem.

that fixed the problem so now on to my other errors, sorry

So now that you fixed it -- recompile and go after the first error again. So what is the first error?

Henry

[Reno Madrigal]

E:\MadrigalR\MadrigalRPA6\src\MadrigalRPA6.java:87: incompatible types
found : double
required: java.lang.String
return Price;

from here

    //GET SERVICE PRICE
public String getPrice()
{
return Price;

[ November 05, 2007: Message edited by: Reno Madrigal ]

[fred rosenberger]

The error message tells you exactly what the problem is. Your method is declared to return a string. the thing you are trying to return is a double. you need to either a) change what the method is declared to return, b) change what the returned thing is, or c) create a new thing (in this case a string) and return that.