import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Map;

import org.apache.poi.hsmf.MAPIMessage;
import org.apache.poi.hsmf.datatypes.AttachmentChunks;
import org.apache.poi.hsmf.exceptions.ChunkNotFoundException;

// You need poi-scratchpad-3.6  and poi-3.6 ( http://poi.apache.org/ )

public class DetectMSGAttachment {
  public static void main (String ... args) throws IOException {
    String msgfile = "c:/temp/messagewithattachment.msg";
    MAPIMessage msg = new MAPIMessage(msgfile);
    Map attachmentMap = msg.getAttachmentFiles();
    if(attachmentMap.size() > 0) {
      for (Iterator ii = attachmentMap.entrySet().iterator(); ii.hasNext();) {
        Map.Entry entry = (Map.Entry)ii.next();
        String attachmentfilename = entry.getKey().toString();
        System.out.println(attachmentfilename);

        // extract attachment
        ByteArrayInputStream fileIn = (ByteArrayInputStream)entry.getValue();
        File f = new File("c:/temp", attachmentfilename); // output
        OutputStream fileOut = null;
        try {
          fileOut = new FileOutputStream(f);
          byte[] buffer = new byte[2048];
          int bNum = fileIn.read(buffer);
          while(bNum > 0) {
            fileOut.write(buffer);
            bNum = fileIn.read(buffer);
          }
        }
        finally {
          try {
            if(fileIn != null) {
              fileIn.close();
            }
          }
          finally {
            if(fileOut != null) {
              fileOut.close();
            }
          }
        }
      }
    }
    else {
      System.out.println("No attachment");
    }
  }
}

import java.util.List;
import com.auxilii.msgparser.*;
import com.auxilii.msgparser.attachment.*;

public class SimpleMsgParser {
  public static void main(String[] args) throws Exception{
    MsgParser msgp = new MsgParser();
    Message msg = msgp.parseMsg("c:/temp/test2.msg");

    String fromEmail = msg.getFromEmail();
    String fromName = msg.getFromName();
    String subject = msg.getSubject();
    String body = msg.getBodyText();

    System.out.println("From :" + fromName + " <" + fromEmail + ">");
    System.out.println("Subject :" + subject);
    System.out.println("");
    System.out.println(body);
    System.out.println("");

    List atts = msg.getAttachments();
    for (Attachment att : atts) {
      if (att instanceof FileAttachment) {
        FileAttachment file = (FileAttachment) att;
        System.out.println("Attachment : " + file.getFilename());
        // you get the actual attachment with
        // byte date[] = file.getData();
      }
    }
  }
}