Hi Ewan,
check for the possible presence of Book.class in some other directory which
is included in the classpath. This error also occurs if there are more than
one class files present in the classpath and hence the compiler does not
know which one to refer to.
Let me know if the problem persists.
Rishabh.
-----Original Message-----
From: Ewan Taylor [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 25, 2001 6:40 PM
To: [EMAIL PROTECTED]
Subject: help!: possible idiot question
cheers for your words of encouragement, but it just hasn't helped...
could you inform me as to why the initial Book.java class will compile, yet
the subclass [ChildrensBook.java] refuses to acknowledge that the superclass
is present in the directory?
thanks
ewan
-----Original Message-----
From: Sachin S. Khanna [mailto:[EMAIL PROTECTED]]
Sent: 25 September 2001 07:54
To: [EMAIL PROTECTED]
Subject: Re: possible idiot question
First of all don't tear your hair out because :
a) You won't look good and
b) It won't solve your problem.
I guess you are trying to do too much too soon.
In my opinion first try compiling the two classes from the command line and
once you are successful, try doing the same within Forte.
There isn't any problem getting the Book class to compile.
After you have done that set the classpath variable from the command prompt
by giving the following command.
set classpath=%classpath%;c:\Program Files\Jakarta Tomcat
4.0\webapps\begjsp-ch07\WEB-INF\classes;
Out here double check the path.
One thing to note here is that if possible don't have spaces within the
folder names.
for eg. our classpath command would be something like this :
set
classpath=%classpath%c:\tomcat\jakarta-tomcat-4.0-m5\webapps\cedric\WEB-INF\
classes;
After that assuming you are still in the library folder compile the
ChildrensBook.java file.
Assume this should help you.
Have a nice day.
With regards,
Sachin S. Khanna
----- Original Message -----
From: Ewan <mailto:[EMAIL PROTECTED]> Taylor
To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
Sent: Monday, September 24, 2001 9:43 PM
Subject: Re: possible idiot question
Hi Shivaraj...
thanks for your patience on this one... i'm gonna run down what i know that
i've got now...
the two classes contained in this mail (below) are both in the same
directory....
C:\Program Files\Jakarta Tomcat
4.0\webapps\begjsp-ch07\WEB-INF\classes\com\wrox\library
the first class Book compiles without a hitch, but the subclass
ChildrensBook is still giving me grief...
when attempting to compile it through forte I get...
WEB-INF/classes/com/wrox/library/ChildrensBook.java [3:1] Class Book not
found in type declaration or import.
public class ChildrensBook extends Book {
^
1 error
and when trying the same through the console, with the command: javac
ChildrensBook.java
I get....
ChildrensBook.java:3: cannot resolve symbol
symbol : class Book
location: class classes.com.wrox.library.ChildrensBook
public class ChildrensBook extends Book {
^
1 error
i have also set my CLASSPATH, under environment variables to ...
C:\Program Files\Jakarta Tomcat 4.0\webapps\begjsp-ch07\WEB-INF\classes
please if you gotten to the end of this mail, could you shed some light on
my predicament, as i am really beginning to tear my hair out here
cheers
ewan
-----Original Message-----
From: shivaraj [mailto:[EMAIL PROTECTED]]
Sent: 24 September 2001 14:18
To: [EMAIL PROTECTED]
Subject: Re: possible idiot question
u can set your classpath in project --> setting --> servlet jsp --> expert
tab . First make sure u r tomcat is running or not
----- Original Message -----
From: Ewan Taylor <mailto:[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
Sent: Monday, September 24, 2001 5:53 PM
Subject: Re: possible idiot question
thanks for you reply...
i feel i may be getting somewhere now that someone has pointed out the
things that are right..
my classes are stored in the webapps folder of tomcat under the directory...
webapps\begjsp-ch07\WEB-INF\classes\com\wrox\library\ does this
tally with my package declaration?
i am unclear as to where the classpath is defined, and what it should
contain... (any suggestions?) there will be many more classes within this
pakage by the time i have finished this section of the tut.
thanks again shivaraj
cheers
ewan
-----Original Message-----
From: shivaraj [mailto:[EMAIL PROTECTED]]
Sent: 24 September 2001 12:49
To: [EMAIL PROTECTED]
Subject: Re: possible idiot question
1) Where r u stroing your classes? If u r classes are in com.wrox.library
then what r u doing right. But i think u have to check u r classpath and
have it pointing to directory which is containing com package.
2) If u just want to use that package, just import that package instead of
declaring a package. and com.wrox.library should be in u r classpath.
happy coding
----- Original Message -----
From: Ewan Taylor <mailto:[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
Sent: Monday, September 24, 2001 4:48 PM
Subject: Re: possible idiot question
thanks very much for you reply, but i think that is what i have done with
the declaration...
package com.wrox.library;
in both of the classes, as i understand it a package is euphanism for
directory, would that be correct.
as you will gather this is a wrox tut
i have pasted the code below for anyone who is interested:
initial class:
*******************************************************
package com.wrox.library;
public class Book {
private String title;
public String getTitle() {
return title;
}
public void setTitle (String title) {
this.title = title;
}
/** Creates new Book: Constructor */
public Book () {
}
public Book (String title) {
this.title = title;
}
}
*******************************************************
extension class:
*******************************************************
package com.wrox.library;
public class ChildrensBook extends Book {
private int minimumAge;
public int getMinimumAge() {
return minimumAge;
}
public void setMinimumAge(int a) {
minimumAge = a;
}
public ChildrensBook() {
super();
}
public ChildrensBook(String title) {
super(title);
}
}
*******************************************************
once again thanks to anyone who is willing to assist me...
ewan taylor
-----Original Message-----
From: shivaraj [mailto:[EMAIL PROTECTED]]
Sent: 24 September 2001 12:21
To: [EMAIL PROTECTED]
Subject: Re: possible idiot question
In both classes u have to declare the package to which that class belong.
That may solve u r problem.
happy coding
----- Original Message -----
From: Ewan Taylor <mailto:[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
Sent: Monday, September 24, 2001 4:27 PM
Subject: possible idiot question
i am trying to get my head around class inheritance and have followed some
tuts, however....
having created a simple class, and then creating a subclass, extending the
first, i keep getting
Class Book not found in type declaration or import...
when i try to compile it, they are both sitting in the same package.... pls
help!! this is giving me a headache.
i am currently running Sun's Forte IDE with JDK1.3.1 and serving it up with
Tomcat 4.0
forte suggests that i have an invalid package declaration but i can find no
documentation on how to rectify this, and am baffled as i have followed the
tuts to the letter and nothing seems out of kilter.
any help will be gratefully recieved...
cheers..
ewan taylor
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