java urls

import java.net.MalformedURLException;
import java.net.URL;

public class URLtest {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		try {
			URL url = new URL("http://etc.sdut.edu.cn/meol/jpk/course/layout/newpage/index.jsp?courseId=15679");
			
			System.out.println(url.getProtocol());
			System.out.println(url.getHost());
			System.out.println(url.getPort());
			System.out.println(url.getDefaultPort());
			System.out.println(url.getPath());
			System.out.println(url.getFile());
			System.out.println(url.getQuery());
			System.out.println (url.getRef ());
			
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace ();
		}
	}

}