NetWatchpublic class NetWatch extends Object | Main program for the NetWatch program: watch the network status
on a bunch of machines (i.e., in a classroom or lab). Currently only
for RMI, but can be extended for TCP socket, CORBA ORB, etc. |
| Methods Summary |
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| public static void | main(java.lang.String[] argv)
Properties p = null;
NetFrame f = new NetFrame("Network Watcher", p);
try {
FileInputStream is = new FileInputStream("NetWatch.properties");
p = new Properties();
p.load(is);
is.close();
} catch (IOException e) {
JOptionPane.showMessageDialog(f,
e.toString(), "Properties error",
JOptionPane.ERROR_MESSAGE);
}
// NOW CONSTRUCT PANELS, ONE FOR EACH HOST.
// If arguments, use them as hostnames.
if (argv.length!=0) {
for (int i=0; i<argv.length; i++) {
f.addHost(argv[i], p);
}
// No arguments. Can we use properties?
} else if (p != null && p.size() > 0) {
String net = p.getProperty("netwatch.net");
int start = Integer.parseInt(p.getProperty("netwatch.start"));
int end = Integer.parseInt(p.getProperty("netwatch.end"));
for (int i=start; i<=end; i++) {
f.addHost(net + "." + i, p);
}
for (int i=0; ; i++) {
String nextHost = p.getProperty("nethost" + i);
if (nextHost == null)
break;
f.addHost(nextHost, p);
}
}
// None of the above. Fall back to localhost
else {
f.addHost("localhost", p);
}
// All done. Pack the Frame and show it.
f.pack();
// UtilGUI.centre(f);
f.setVisible(true);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
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