Package compile error "cannot resolve symbol"

[cgreynes]

Hi,

When I compile the .java file from the book, I get a "cannot resolve symbol". It point to the bean file.

BankCustomer.java
------------------------------
package coreservlets;

import java.util.*;

public class BankCustomer {
private String id, firstName, lastName;
private double balance;

public BankCustomer(String id, String firstName, String lastName, double balance) {
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
this.balance = balance;
}

public String getId() {
return(id);
}

public String getFirstName() {
return(firstName);
}

public String getLastName() {
return(lastName);
}

public double getBalance() {
return(balance);
}

public double getBalanceNoSign() {
return(Math.abs(balance));
}

public void setBalance(double balance) {
this.balance = balance;
}

private static HashMap customers;

static {
customers = new HashMap();
customers.put("id001", new BankCustomer("id001", "John", "Hacker", -3456.78));
customers.put("id002", new BankCustomer("id002", "Jane", "Hacker", 1234.56));
customers.put("id003", new BankCustomer("id003", "Juan", "Hacker", 987654.32));
}

public static BankCustomer getCustomer(String id) {
return((BankCustomer)customers.get(id));
}
}
------------------------------

ShowBalance.java

------------------------------
package coreservlets;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class ShowBalance extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
BankCustomer customer = BankCustomer.getCustomer(request.getParameter("id")); //error out when using BankCustomer
String address;
if (customer == null) {
address = "/WEB-INF/bank-account/UnknownCustomer.jsp";
} else if (customer.getBalance() < 0) {
address = "/WEB-INF/bank-account/NegativeBalance.jsp";
request.setAttribute("badCustomer", customer);
} else if (customer.getBalance() < 10000) {
address = "/WEB-INF/bank-account/NormalBalance.jsp";
request.setAttribute("regularCustomer", customer);
} else {
address = "/WEB-INF/bank-account/HighBalance.jsp";
request.setAttribute("eliteCustomer", customer);
}
RequestDispatcher dispatcher =
request.getRequestDispatcher(address);
dispatcher.forward(request, response);
}
}
------------------------------

Thanks and I am sorry if this is a simple error. I tried to set the ClassPath and still did not work. I am using Apache Tomcat 5.5.


Clark

 

[sedj]

post the actual the compilation error.

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[cgreynes]

when I type
"...\javac ShowBalance.java"

the error below shows up...
----------------------------------------------
ShowBalance.java:11: cannot resolve symbol
symbol : class BankCustomer
location: class coreservlets.ShowBalance
BankCustomer customer = BankCustomer.getCustomer(request,getParameter("id"));
^
ShowBalance.java:11: cannot resolve symbol
symbol : variable BankCustomer
location: class coreservlets.ShowBalance
BankCustomer customer = BankCustomer.getCustomer(request,getParameter("id"));
^

2 errors
----------------------------------------------

 

[cgreynes]

The second error is pointing to the second BankCustomer (not customer variable).

 

[sedj]

You have two problems - you have probably not set your CLASSPATH correctly, and also you are not comiling the class correctly.

If your .java file is in "/usr/java/coreservlets/ShowBalance.java"

then you need to change directory to "/usr/java" and then type :

javac coreservlets/ShowBalance.java

But you must also set your CLASSPATH to "/usr/java" so that the other classes in the coreservlets package/directory are found by the compiler.

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[cgreynes]

Thanks sedj. I can compile the code.

I set the class path to:
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\bluereef\WEB-INF\classes>

where coreservlets directory is under classes directory.

and compiled using your command javac coresrvlets/ShowBalance.java