This compiles without issue:

package standalone;
/**
* MIMEType.java
*/
public class MIMEType
{
/**A MIME type is made up of 2 parts
 * contentType/subtype
 */
protected String contentType;
protected String subtype;

public MIMEType(String type)
{
 int slash = type.indexOf('/');
 contentType = type.substring(0, slash - 1);
 subtype = type.substring(slash + 1, type.length());
}

public MIMEType(String contentType, String subtype)
{
 this.contentType = contentType;
 this.subtype = subtype;
}

public String toString()
{
 return contentType + "/" + subtype;
}
} // MIMEType

But this doesn't:

package standalone;

/**
* FileClassifier.java
*/

public class FileClassifier
{
static MIMEType getMIMEType(String fileName)
{
 if (fileName.endsWith(".gif")){
  return new MIMEType("image", "gif");
 } else if (fileName.endsWith(".jpeg")) {
  return new MIMEType("image", "jpeg");
 } else if (fileName.endsWith(".mpg")) {
  return new MIMEType("video", "mpeg");
 } else if (fileName.endsWith(".txt")) {
  return new MIMEType("text", "plain");
 } else if (fileName.endsWith("html")) {
  return new MIMEType("text", "html");
 } else
  // fill in lots of other types,
  // but eventually give up and
  return null;
}
} // FileClassifier

The MIMEType.class exists in the same folder as FileChooser.java.  But FileChooser.java won't compile with this error:

C:\Documents and Settings\Administrator\My Documents\Visual Studio Projects\MIME
Class>javac FileClassifier.java
FileClassifier.java:9: cannot resolve symbol
symbol  : class MIMEType
location: class standalone.FileClassifier
       static MIMEType getMIMEType(String fileName)
              ^
FileClassifier.java:12: cannot resolve symbol
symbol  : class MIMEType
location: class standalone.FileClassifier
                       return new MIMEType("image", "gif");
                                  ^
FileClassifier.java:14: cannot resolve symbol
symbol  : class MIMEType
location: class standalone.FileClassifier
                       return new MIMEType("image", "jpeg");
                                  ^
FileClassifier.java:16: cannot resolve symbol
symbol  : class MIMEType
location: class standalone.FileClassifier
                       return new MIMEType("video", "mpeg");
                                  ^
FileClassifier.java:18: cannot resolve symbol
symbol  : class MIMEType
location: class standalone.FileClassifier
                       return new MIMEType("text", "plain");
                                  ^
FileClassifier.java:20: cannot resolve symbol
symbol  : class MIMEType
location: class standalone.FileClassifier
                       return new MIMEType("text", "html");
                                  ^
6 errors

Any suggestions?