How to plug a web browser like firefox into a java application

Question

I am developing a sftware that conect to de internet and get a web page source code.
Problems i have.
im using URL clas and the open conect method
this is the source:
public String Connect(String pUrl) throws HtmlConnectionException{
        String lTxtHtml = "";
        String lLine = "";
        BufferedReader lInput = null;
        int lTimeout = 15000;
        URL url;
        try {
            if(gProxyIP != ""){              
                url = new URL("http",gProxyIP,Integer.parseInt(gProxyPort),pUrl);
            }else{
                url = new URL(pUrl);
            URLConnection urlc = url.openConnection();
            urlc.setDefaultUseCaches(false);
//            urlcsetReadlTimeout(lTimeout);
            lInput = new BufferedReader(new InputStreamReader(new DataInputStream(url.openStream())));
            while ((lLine = lInput.readLine()) != null) {
                lTxtHtml += (lLine) + "\n";
            lInput.close();
        } catch (SocketTimeoutException e){
             gLogger.severe(e.getMessage());
            //e.printStackTrace();
            lTxtHtml = "lTimeout";
            throw new HtmlConnectionException(lTxtHtml);
        } catch (MalformedURLException e) {
             gLogger.severe(e.getMessage());
            //ex.printStackTrace();
            lTxtHtml = "Bad URL";
            throw new HtmlConnectionException(lTxtHtml);
        } catch (IOException e) {
             gLogger.severe(e.getMessage());
            //ex.printStackTrace();
            lTxtHtml = "Invalid";
            throw new HtmlConnectionException(lTxtHtml);
        return lTxtHtml;
    }but i dont know how to handle redirection of pages becose some teimes when it redirect me to anoder page an snd me an 30X mensage it crash and throw an IO Exception.
Probelm 2
i show the source of the web page but wat i nned is to plug a web wrowser into my application that let me se the web page in one JPanel and its source hig ligted in a JEditPane.
becose i ned to parse tags to identify string automatically
or the otehr option is to plug my application into a web wrobser (as a plugin of firefox) an be a ble to run it when i chose it from a contextual menu
please. can u help me to find the way?

Answer 1

You can use the Runtime class for this. It can run any command. So, you can run the .exe file of your Web browser.
The following code will run Internet Explorer (assuming iexplorer.exe is in C:\Program Files\Internet Explorer):
import java.lang.Runtime;
public class Explore{
public static void main(String[] args) {
try{
Process p = Runtime.getRuntime().exec("C:\\Program Files\\Internet Explorer\\iexplore");
}catch (Exception e) {
System.out.println("Exception: " + e);