Re: Newbie is puzzled over CLASSPATH

I've been programming for a good while, but am new to Java. I've been
trying to answer my own questions by doing online research, but I've seem
to hit a wall.

I have Java EE installed at /usr/local/glassfish3. I've got JAVAHOME set
to /usr/local/glassfish3/jdk7 and CLASSPATH set to /usr/local/glassfish3/
jdk7/lib. All was seeming to go smoothly with my Java development until I
installed Apache HTTPComponents. I copied the jar files to /usr/local/
glassfish3/jdk7/lib.

I've got a simple HTTPComponents example program that I grabbed off the
web. When I run javac against it I get errors reporting that the
HTTPComponents files can't be found. Another simple Java program that
displays my classpath, and it shows the path I set it to.

My example program is:
package org.apache.http.examples.client;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

/**
  * A simple example that uses HttpClient to execute an HTTP request
against
  * a target site that requires user authentication.
  */
public class ClientAuthentication {

     public static void main(String[] args) throws Exception {
         DefaultHttpClient httpclient = new DefaultHttpClient();
         try {
             httpclient.getCredentialsProvider().setCredentials(
                     new AuthScope("50.17.237.39", 80),
                     new UsernamePasswordCredentials("test", "test"));

             HttpGet httpget = new HttpGet("http://50.17.237.39/test");
             System.out.println("executing request" +
httpget.getRequestLine());
             HttpResponse response = httpclient.execute(httpget);
             HttpEntity entity = response.getEntity();

             System.out.println
("----------------------------------------");
             System.out.println(response.getStatusLine());
             if (entity != null) {
                 System.out.println("Response content length: " +
entity.getContentLength());
             }
             EntityUtils.consume(entity);
         } finally {
             // When HttpClient instance is no longer needed,
             // shut down the connection manager to ensure
             // immediate deallocation of all system resources
             httpclient.getConnectionManager().shutdown();
         }
     }
}

The error message I get is:
dan@dan-Aspire-4730Z:~/development$ javac ClientAuthentication.java
ClientAuthentication.java:3: error: cannot find symbol
import org.apache.http.HttpEntity;
                       ^
   symbol: class HttpEntity
   location: package org.apache.http
ClientAuthentication.java:4: error: cannot find symbol
import org.apache.http.HttpResponse;
                       ^
   symbol: class HttpResponse
   location: package org.apache.http
ClientAuthentication.java:5: error: package org.apache.http.auth does not
exist
import org.apache.http.auth.AuthScope;
                            ^
ClientAuthentication.java:6: error: package org.apache.http.auth does not
exist
import org.apache.http.auth.UsernamePasswordCredentials;
                            ^
ClientAuthentication.java:7: error: package org.apache.http.client.methods
does not exist
import org.apache.http.client.methods.HttpGet;
                                      ^
ClientAuthentication.java:8: error: package org.apache.http.impl.client
does not exist
import org.apache.http.impl.client.DefaultHttpClient;
                                   ^
ClientAuthentication.java:9: error: package org.apache.http.util does not
exist
import org.apache.http.util.EntityUtils;
                            ^
ClientAuthentication.java:18: error: cannot find symbol
         DefaultHttpClient httpclient = new DefaultHttpClient();
         ^
   symbol: class DefaultHttpClient
   location: class ClientAuthentication
ClientAuthentication.java:18: error: cannot find symbol
         DefaultHttpClient httpclient = new DefaultHttpClient();
                                            ^
   symbol: class DefaultHttpClient
   location: class ClientAuthentication
ClientAuthentication.java:21: error: cannot find symbol
                     new AuthScope("50.17.237.39", 80),
                         ^
   symbol: class AuthScope
   location: class ClientAuthentication
ClientAuthentication.java:22: error: cannot find symbol
                     new UsernamePasswordCredentials("test", "test"));
                         ^
   symbol: class UsernamePasswordCredentials
   location: class ClientAuthentication
ClientAuthentication.java:24: error: cannot find symbol
             HttpGet httpget = new HttpGet("http://50.17.237.39/test");
             ^
   symbol: class HttpGet
   location: class ClientAuthentication
ClientAuthentication.java:24: error: cannot find symbol
             HttpGet httpget = new HttpGet("http://50.17.237.39/test");
                                   ^
   symbol: class HttpGet
   location: class ClientAuthentication
ClientAuthentication.java:27: error: cannot find symbol
             HttpResponse response = httpclient.execute(httpget);
             ^
   symbol: class HttpResponse
   location: class ClientAuthentication
ClientAuthentication.java:28: error: cannot find symbol
             HttpEntity entity = response.getEntity();
             ^
   symbol: class HttpEntity
   location: class ClientAuthentication
ClientAuthentication.java:35: error: cannot find symbol
             EntityUtils.consume(entity);
             ^
   symbol: variable EntityUtils
   location: class ClientAuthentication
16 errors

I even tried to point the compiler to the directory into which I
extracted the file, with:
javac -cp /home/dan/Downloads/httpcomponents-client-4.2.1/lib:$CLASSPATH
ClientAuthentication.java
and get the same results.

I'm obviously missing something. Could anyone point me to what I might be
overlooking?