Please help me to fix my article submitter script

import java.io.*;
import java.net.*;

public class submit {
	
	String submit_url = null;
	String cookie = null;
	Boolean is_cookie = false;
	Boolean is_image = true;
	String image_field = null;
	String[] fields = new String[20];
	String[] fields_values = new String[20];
	int fields_nr;
	String image_mime;
	Boolean get_cookie = false;

	public void submit(String site){		
		
		tutorial tutorial = new tutorial();
		tutorial.get_tutorial(site);
		
		switch(tutorial.image_type){
			case ".jpg":
				image_mime = "image/jpeg";
				break;
			case ".png":
				image_mime = "image/png";
				break;
			case ".gif":
				image_mime = "image/gif";
				break;
		}
			
		switch(site){
			case "toxiclab":
				submit_url = "http://toxiclab.org/submit-tutorial.asp";
				cookie = "toxiclab=login=inf11652om";
				is_cookie = true;
				image_field = "myFile";
				fields[1] = "Name";
				fields_values[1] = tutorial.title;
				fields[2] = "Url";
				fields_values[2] = tutorial.url;
				fields[3] = "cat";
				fields_values[3] = tutorial.category;
				fields[4] = "Desc";
				fields_values[4] = tutorial.description;
				fields[5] = "categoryIds";
				fields_values[5] = "8";
				fields_nr = 5;
				break;
			case "tutorialkit":
				submit_url = "http://tutorialkit.com/submit.html";
				cookie = "login=csabi; passwd=xxxxxxx";
				is_cookie = true;
				image_field = "file";
				fields[1] = "title";
				fields_values[1] = tutorial.title;
				fields[2] = "url";
				fields_values[2] = tutorial.url;
				fields[3] = "act";
				fields_values[3] = "submit";
				fields[4] = "description";
				fields_values[4] = tutorial.description;
				fields_nr = 4;
				break;
				
		}
		
		System.out.print(site + ": ");
		
		if(tutorial.id > 0){
			try {
			
				URL url = new URL(submit_url);
				HttpURLConnection connection = (HttpURLConnection) url.openConnection();
		
				String line_end = "rn";
				String two_hyphens = "--";
				String boundary = "--*****";
				int bytesRead, bytesAvailable, bufferSize;
				byte[] buffer;
				int maxBufferSize = 1*1024*1024;
			
				connection.setRequestMethod("POST");
				connection.setDoOutput(true);
				connection.setDoInput(true);
				connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
				if(is_cookie){
					connection.setRequestProperty("Cookie", cookie);
				}
				connection.setRequestProperty("USER-AGENT", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2");
				connection.setRequestProperty("Connection", "Keep-Alive");
				connection.setRequestProperty("Accept-Charset","iso-8859-1,*,utf-8");
				DataOutputStream httpStreamWriter = new DataOutputStream(connection.getOutputStream ());

				for(int i=1;i<=fields_nr;i++){
					httpStreamWriter.writeBytes(two_hyphens + boundary + line_end);
					httpStreamWriter.writeBytes("Content-Disposition: form-data; name="" + fields[i] + """ + line_end);
					httpStreamWriter.writeBytes("Content-Type: text/plain; charset=iso-8859-1" + line_end);
					httpStreamWriter.writeBytes(line_end);
					httpStreamWriter.writeBytes(fields_values[i]);
					httpStreamWriter.writeBytes(line_end);
				}
			
				if(is_image){
					httpStreamWriter.writeBytes(two_hyphens + boundary + line_end);
					httpStreamWriter.writeBytes("Content-Disposition: form-data; name="" + image_field + ""; filename="D:/Work/Thumbnails/" + tutorial.id + tutorial.image_type + """ + line_end);
					httpStreamWriter.writeBytes("Content-Type: " + image_mime + line_end + line_end);
			
					FileInputStream fileInputStream = new FileInputStream(new File("D:/Work/Thumbnails/" + tutorial.id + tutorial.image_type));
					bytesAvailable = fileInputStream.available();
					bufferSize = Math.min(bytesAvailable, maxBufferSize);
					buffer = new byte[bufferSize];
            
					bytesRead = fileInputStream.read(buffer, 0, bufferSize);
					while(bytesRead > 0) {
						httpStreamWriter.write(buffer, 0, bufferSize);
						bytesAvailable = fileInputStream.available();
						bufferSize = Math.min(bytesAvailable, maxBufferSize);
						bytesRead = fileInputStream.read(buffer, 0, bufferSize);
					}
				}
			
				httpStreamWriter.writeBytes(line_end);
				httpStreamWriter.writeBytes(two_hyphens + boundary + two_hyphens + line_end);
			
				httpStreamWriter.flush ();
				httpStreamWriter.close ();
				
				connection.connect();

				BufferedReader bufferr = new BufferedReader(new InputStreamReader(connection.getInputStream()));
				String line;
				while ((line = bufferr.readLine()) != null) {
				
					System.out.println(line);
				
				} 
				System.out.println();
				System.out.println();
				
				for(int i = 0;i<50;i++){
					System.out.println(connection.getHeaderFieldKey(i) + " = " + connection.getHeaderField(i));
				}
				
				URL url2 = new URL("http://www.tutorialswindow.com/admin/outside_submitter_action_submit.php?site=" + site + "&tutorial=" + tutorial.id);
				URLConnection connection2 = url2.openConnection();
				connection2.connect();
				
				BufferedReader bufferr2 = new BufferedReader(new InputStreamReader(connection2.getInputStream()));
				String line2;
				while ((line2 = bufferr2.readLine()) != null) {
				
					System.out.println(line2);
				
				} 
				System.out.println();
				System.out.println();
	
			}
			catch(Exception e){
				e.printStackTrace();
			}
		}
		else if(tutorial.id == 0){
			System.out.println("No more tutorials to submit");
		}
		else if(tutorial.id == -1){
			System.out.println("Fast submission");
		}
		
	}

}