urldemo.java

java经典10例子

// URLDemo.java 
import java.io.*;
import java.net.*;

class URLDemo{
	public static void main (String [] args) 
		throws IOException{
		if (args.length != 1){
			System.err.println ("Please input URL");
			return;
		}
		URL url = new URL (args [0]);
		System.out.println ("Authority = "+ url.getAuthority ());
		System.out.println ("Default port = " +url.getDefaultPort ());
		System.out.println ("File = " +url.getFile ());
		System.out.println ("Host = " +url.getHost ());
		System.out.println ("Path = " +url.getPath ());
		System.out.println ("Port = " +url.getPort ());
		System.out.println ("Protocol = " +url.getProtocol ());
		System.out.println ("Query = " +url.getQuery ());
		System.out.println ("Ref = " +url.getRef ());
		System.out.println ("User Info = " +url.getUserInfo ());
		System.out.print ('\n');

		InputStream is = url.openStream ();
		
		int ch;
		while ((ch = is.read ()) != -1)
			System.out.print ((char) ch);
		is.close ();
	}
}