Java调用cmd命令行打开网页

package zmx.valid.test;

/////////////////////////////////////////////////////////
//Bare Bones Browser Launch                            //
//Version 1.5 (December 10, 2005)                      //
//By Dem Pilafian                                      //
//Supports: Mac OS X, GNU/Linux, Unix, Windows XP      //
//Example Usage:                                       //
//String url = "http://www.centerkey.com/";           //
//BareBonesBrowserLaunch.openURL(url);                //
//Public Domain Software -- Free to Use as You Like    //
/////////////////////////////////////////////////////////

/**
 * @author Dem Pilafian
 * @author John Kristian
 */
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import javax.swing.JOptionPane;

public class BareBonesBrowserLaunch {

	public static void openURL(String url) {
		try {
			browse(url);
		} catch (Exception e) {
			JOptionPane.showMessageDialog(
					null,
					"Error attempting to launch web browser:\n"
							+ e.getLocalizedMessage());
		}
	}

	private static void browse(String url) throws ClassNotFoundException,
			IllegalAccessException, IllegalArgumentException,
			InterruptedException, InvocationTargetException, IOException,
			NoSuchMethodException {
		String osName = System.getProperty("os.name", "");
		if (osName.startsWith("Mac OS")) {
			Class fileMgr = Class.forName("com.apple.eio.FileManager");
			Method openURL = fileMgr.getDeclaredMethod("openURL",
					new Class[] { String.class });
			openURL.invoke(null, new Object[] { url });
		} else if (osName.startsWith("Windows")) {
			Runtime.getRuntime().exec(
					"rundll32 url.dll,FileProtocolHandler " + url);
		} else { // assume Unix or Linux
			String[] browsers = { "firefox", "opera", "konqueror", "epiphany",
					"mozilla", "netscape" };
			String browser = null;
			for (int count = 0; count < browsers.length && browser == null; count++)
				if (Runtime.getRuntime()
						.exec(new String[] { "which", browsers[count] })
						.waitFor() == 0)
					browser = browsers[count];
			if (browser == null)
				throw new NoSuchMethodException("Could not find web browser");
			else
				Runtime.getRuntime().exec(new String[] { browser, url });
		}
	}
	
	
	public static void main(String[] args) {
		openURL("www.baidu.com");
	}

}