Java Bean Sub Classes

[icredes]

Alright...

I am creating a bunch of beans.... magic beans?

anyway

I have 2 classes

Parameters.java

  
package com;
 
public class Parameters
{
private String str_server_name;
 
public Parameters()
{
this.str_server_name = "localhost";
}
public String getServerName()
{

return this.str_server_name;
}
}

and
Contacts.java

package com;
 
public class Contacts
{
private com.Parameters objParams = new com.Parameters();
  public String yummy(){

        return objParams.getServerName();
    }
}

both of these files exist in
myapp/WEB-INF/classes/com/

I get an error when compiling Contacts.java

Contacts.java:5: cannot resolve symbol
symbol  : class Parameters
location: package com
                private com.Parameters objParams = new Parameters();
                           ^
Contacts.java:5: cannot resolve symbol
symbol  : class Parameters
location: class com.Contacts
                private com.Parameters objParams = new Parameters();
                                                       ^
2 errors

how can you pull from another class succesfully

[Steve Morrow]

javac -classpath .;<any additional jar files or directories> com/Parameters.java

You get a "cannot resolve symbol" message because the compiler can't find your class. The way to remedy this is to ensure that your class is included in the classpath. The example assumes that you are in the classes directory.

Javapedia: Classpath
How Classes are Found
[ May 05, 2005: Message edited by: Steve Morrow ]

[Steve Morrow]

P.S. You probably will have an easier time if you don't store your source tree in the /WEB-INF/classes directory...

[icredes]

where should it be instead?

[Steve Morrow]

where should it be instead?

Your source code? Wherever you want. But I like to keep the source and compiled classes separate; it makes clean builds much easier/less dangerous.

[icredes]

do I need to reset my class path for every application?
and if so how?

[icredes]

ok...

I got it to work

what I had to do was compile it from

/webapp/classes/

javac com/Parameters.java
javac com/Contacts.java

This worked...

Why? do I have to compile all packaged classes from the reference of the classes folder?

[Steve Morrow]

Originally posted by James Todd:
do I need to reset my class path for every application?
and if so how?

I don't recommend setting a system classpath at all. I recommend specifying the classpath as an argument or within the context of your application (IDE setting, etc.).

[Steve Morrow]

what I had to do was compile it from

/webapp/classes/

Yeah, that's kind of what I pointed out...

This worked...

Why? do I have to compile all packaged classes from the reference of the classes folder?

It worked because that's what the compiler expects. Check out those links I posted, and get yourself familiar with how the classpath operates. It'll ease many future headaches, I guarantee.

Also, if you haven't yet heard of Apache Ant, you'll want to do yourself a favor and learn about it, quickly.