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");
}

}