URL

try{

URL u=new URL("http://www.google.com/xxx/conan.html");
System.out.println(u.getProtocol());//http
System.out.println(u.getHost());//www.google.com
System.out.println(u.getPort());//URL若沒有埠號則回傳-1
System.out.println(u.getFile());// 回傳/xxx/conan.html

}catch(MalformedURLException e){

System.out.println("Error 404");

}