Connects to Pastebin and crops out the paste content via looking for HTML tags. Use as add-on class.

PastebinFetch.java

/** Connects to Pastebin and receives a paste's content through cutting the received string with some HTML tags that
 *  Pastebin uses to store its content.
 * 
 *
 * 
 * 
 */
import java.io.*; // Used to read the content of the URL stream
import java.net.*; // Used to connect to the Internet and create a stream

public class URLtest {

    static String url_as_string;
    public URLtest(String url)
    {
        url_as_string = url;
       fetchURL();
    }
    public static void fetchURL()
    {

        URL url1 = null; // Declares the URL so it could be used, gives it a value to not get a compiler error
        try {
            url1 = new URL(url_as_string); // Gives the URL its real meaning
        } catch(MalformedURLException ex)
        {
            System.out.println(ex.getMessage());  // Catches the exception and prints the output
            ex.printStackTrace();
        }

        InputStream stream = null; // A stream to read from the URL
        try {
        stream = url1.openStream();// The stream now reads from the URL
        }
        catch(IOException ex)
        {
            System.out.println(ex.getMessage()); // Another exception handle
            ex.printStackTrace();
        }
        catch(NullPointerException ex)
        {
           ex.printStackTrace();
        }

        String str = null; // The string used for output
        try {
            str = convertStreamToString(stream); // Makes the InputStream into a string
        } catch(Exception exc) {
            System.out.println(exc.getMessage());// Handles the exception
            exc.printStackTrace();

        }

         // Gets the paste content
        String content = str.substring(str.indexOf("<textarea cols=\"5\" rows=\"5\" id=\"paste_code\" class=\"paste_code\" name=\"paste_code\" onkeydown=\"return catchTab(this,event)\">"),str.indexOf("</textarea>"));
        // Removes the textarea tag from the beginning of the content
        String content2 = null;
        content2 = content.substring("<textarea cols=\"5\" rows=\"5\" id=\"paste_code\" class=\"paste_code\" name=\"paste_code\" onkeydown=\"return catchTab(this,event)\">".length());
        // Output
        System.out.println("The content of the Stream: \n" + str); // The output
        System.out.println("The content of the paste: \n" + content2);
        System.out.println("Run successful.");
    }

    public static String convertStreamToString(InputStream is) throws Exception { // A method that makes an InputStream into a String, copied from the web
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        return sb.toString();
    }
}