A very useful Java code, to open a web browser from Java application in windows or Linux.

package com.mkyong;
 
public class StartBrowser {
 
  public static void main(String args[])
  {
	String url = "http://www.google.com";
	String os = System.getProperty("os.name").toLowerCase();
        Runtime rt = Runtime.getRuntime();
 
	try{
 
	    if (os.indexOf( "win" ) >= 0) {
 
	        // this doesn't support showing urls in the form of "page.html#nameLink" 
	        rt.exec( "rundll32 url.dll,FileProtocolHandler " + url);
 
	    } else if (os.indexOf( "mac" ) >= 0) {
 
	        rt.exec( "open " + url);
 
            } else if (os.indexOf( "nix") >=0 || os.indexOf( "nux") >=0) {
 
	        // Do a best guess on unix until we get a platform independent way
	        // Build a list of browsers to try, in this order.
	        String[] browsers = {"epiphany", "firefox", "mozilla", "konqueror",
	       			             "netscape","opera","links","lynx"};
 
	        // Build a command string which looks like "browser1 "url" || browser2 "url" ||..."
	        StringBuffer cmd = new StringBuffer();
	        for (int i=0; i<browsers.length; i++)
	            cmd.append( (i==0  ? "" : " || " ) + browsers[i] +" \"" + url + "\" ");
 
	        rt.exec(new String[] { "sh", "-c", cmd.toString() });
 
           } else {
                return;
           }
       }catch (Exception e){
	    return;
       }
      return;		
 
}
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