Parsing URLs  The class has five methods to split a URL into its
component parts. These are:   public String getProtocol()
public String getHost()  public int    getPort()   public String
getFile()  public String getRef()  For example,   try {     URL
u = new URL("");     System.out.println("The protocol is " +
u.getProtocol());     System.out.println("The host is " +
u.getHost());     System.out.println("The file is " +
u.getFile());     System.out.println("The anchor is " +
u.getRef());   catch (MalformedURLException ex) {  If a port is
not explicitly specified in the URL, it's set to -1. This does
not mean that the connection is attempted on port -1 (which
doesn't exist) but rather that the default port is to be used.
If the ref doesn't exist, it's just null, so watch out for
NullPointerExceptions. Better yet, test to see that it's non-
null before using it.  Finally if the file is left off
completely, e.g., then it's set to "/".  Previous | Next | Top |
Cafe au Lait  Copyright 1997, 1998 Elliotte Rusty H