Application Reading A Gmail Message With Javamail?

I'm working on a application in Java which needs to be able to send and retrieve Gmails, and depending on the received information possibly store some of it. It can already send Gmails properly, and I've been able to make the program look for undread Gmails and start reading them. I can read stuff like the subject, the date it was sent and retrieved, who sent it and the like, but for some reason retrieving the actual information within the Gmail seems to be really difficult. This is the current code I'm using to retrieve a Gmail:

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;

[Code]....

Is just another failed attempt, it too just prints it to the console and doesn't return any visible value at all that I can use. It also doesn't filter out all the non-interesting stuff unlike the example above it.

I've searched around a lot and seen lots of solutions presented, but either I didn't get them to work or they simply printed it to the console, I'm sure this is a fairly easy thing to and probably often asked but, I'm stuck all the same.