//http://stackoverflow.com/questions/5226212/how-to-open-the-default-webbrowser-using-java


//CROSS-PLATFORM SOLUTION

import java.awt.Desktop;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;


public class Browser {

  public static void main(String[] args) {
    String url = "http://www.google.com";

    if(Desktop.isDesktopSupported()){
      Desktop desktop = Desktop.getDesktop();
      try {
        desktop.browse(new URI(url));
      } catch (IOException | URISyntaxException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    } else {
      Runtime runtime = Runtime.getRuntime();
      try {
        runtime.exec("xdg-open " + url);
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
  }
}



//ALTERNATIVE CROSS-PLATFORM SOLUTION

import java.awt.Desktop;
import java.net.URI;


public class App {

  public static void main(String[] args) throws Exception {
    String url = "http://stackoverflow.com";

    if(Desktop.isDesktopSupported()) {
      // Windows
      Desktop.getDesktop().browse(new URI(url));
    } else {
      // Ubuntu
      Runtime runtime = Runtime.getRuntime();
      runtime.exec("/usr/bin/firefox -new-window " + url);
    }
  }
}



// BARE BONES SOLUTION http://centerkey.com/java/browser/

// 1) THE CALL

String url = "http://www.google.com"; 
java.awt.Desktop.getDesktop().browse(java.net.URI.create(url));


// 2) THE CODE

import javax.swing.JOptionPane; 
import java.util.Arrays; 

public class BareBonesBrowserLaunch { 

  static final String[] browsers = {
    "x-www-browser", 
    "google-chrome", 
    "firefox", 
    "opera", 
    "epiphany", 
    "konqueror", 
    "conkeror", 
    "midori", 
    "kazehakase", 
    "mozilla"
  };

  static final String errMsg = "Error attempting to launch web browser";

  public static void openURL(String url) {

    try { // attempt to use Desktop library from JDK 1.6+ 

      Class<?> 
      d = Class.forName("java.awt.Desktop"); 

      /* The following statement mimicks: 
      java.awt.Desktop.getDesktop().browse() */

      d.getDeclaredMethod("browse",new Class[]{java.net.URI.class}).invoke(
      d.getDeclaredMethod("getDesktop")
      .invoke(null),new Object[]{java.net.URI.create(url)}); 

    } catch (Exception ignore) {

      // library not available or failed 

      String osName = System.getProperty("os.name"); 

      try {
        if(osName.startsWith("Mac OS")) {

          Class.forName("com.apple.eio.FileManager")
          .getDeclaredMethod("openURL",new Class[]{String.class})
          .invoke(null,new Object[]{url});

        } else if(osName.startsWith("Windows"))
          Runtime.getRuntime()
          .exec("rundll32 url.dll,FileProtocolHandler " + url);

          /* Assume Linux/Unix */

         else {
           String browser = null; 
           for(String b : browsers)

             if(browser == null && 
               Runtime.getRuntime().exec(new String[]{"which", b})
               .getInputStream().read() != -1)

                Runtime.getRuntime()
                .exec(new String[]{browser = b, url});

                if(browser == null) 
                  throw new Exception(Arrays.toString(browsers));

         } 
       } catch(Exception e){
         JOptionPane.showMessageDialog(null,errMsg + "\n" + e.toString());
       }
     } 
   } 
}


// 3) TEST PROGRAM

import java.awt.event.*; 
import javax.swing.*;
 
public class MyApp {
  public static void main(String[] args) {
    JFrame frame = new JFrame();
    JPanel panel = new JPanel();
    final
    JTextField urlField = new JTextField("http://centerkey.com ");
    JButton webButton = new JButton("Web Trip");
    webButton.addActionListener(
      new ActionListener() {
        public void actionPerformed(ActionEvent e) { 
          BareBonesBrowserLaunch.openURL(urlField.getText().trim());
        }
      }
    ); 
    frame.setTitle("Bare Bones Browser Launch");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    panel.add(new JLabel("URL:"));
    panel.add(urlField);
    panel.add(webButton);
    frame.getContentPane().add(panel);
    frame.pack();
    frame.setVisible(true);
  }
}