Writing output straight to a text file

//Pre-flight check: import the java libraries needed
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.File;
import java.net.URL;
//following are addn libraries needed for file conversion
import java.awt.image.RenderedImage;
import javax.imageio.ImageIO;

//... my other code went here ...

//5. Retrieve the image from the stream and save it to the file
//NOTE: Following code adapted from http://www.avajava.com/tutorials/lessons/how-do-i-save-an-image-from-a-url-to-a-file.html

        try {
        //b. check to see if the file/directory exists
                Image_Directory_Exists_BOOL = new File(DestinationFile_STR).exists();
                if (Image_Directory_Exists_BOOL==false)
                {
                //If the file doesn't exist
                //access FileWriter & OutputStreamWriter
                // to create the file
                        FileWriter out = null;
                        try
                        {
                        OutputStream out = new FileOutputStream (DestinationFile_STR);
                        out.close();
                        session.logInfo("--- Image Access script: image download path created! ---"); //for testing
                        }

        //a. Set up the URL and image streams needed
                URL url = new URL(Image_URL_STR);
                InputStream is = url.openStream();
                OutputStream os = new FileOutputStream(DestinationFile_STR);

        //b. If the file does exists (or if it's been newly created)
        //   write the image data to the file
                byte[] b = new byte[2048];
                int length;

                while ((length = is.read(b)) != -1)
                {
                        os.write(b, 0, length);
                }
                is.close();
                os.close();
                session.logInfo("--- Image Access script: Image mark written to JPG file " + DestinationFile_STR + " ---");
        // for testing
                }
        }
} else {
        //c. if the mark is NOT an image file, just move onto the next one
        session.logInfo("Image Access script: not an image file ---");
}