Sockets for Clients - Java Network Programming - page 278

return p ;
}
private JPanel initServerChoice () {
final JPanel p = new JPanel ();
p . setLayout ( new GridLayout ( 6 , 1 , 5 , 2 ));
p . add ( new JLabel ( "Search At: " ));
chosenServer . setText ( server . getHost (). getHostName ());
p . add ( chosenServer );
chosenServer . addActionListener ( new ActionListener () {
@Override
public void actionPerformed ( ActionEvent event ) {
try {
server = new Whois ( chosenServer . getText ());
} catch ( UnknownHostException ex ) {
JOptionPane . showMessageDialog ( p ,
ex . getMessage (), "Alert" , JOptionPane . ERROR_MESSAGE );
}
}
} );
return p ;
}
private class LookupNames implements ActionListener {
@Override
public void actionPerformed ( ActionEvent event ) {
names . setText ( "" );
SwingWorker < String , Object > worker = new Lookup ();
worker . execute ();
}
}
private class Lookup extends SwingWorker < String , Object > {
@Override
protected String doInBackground () throws Exception {
Whois . SearchIn group = Whois . SearchIn . ALL ;
Whois . SearchFor category = Whois . SearchFor . ANY ;
String searchForLabel = searchFor . getSelection (). getActionCommand ();
String searchInLabel = searchIn . getSelection (). getActionCommand ();
if ( searchInLabel . equals ( "Name" )) group = Whois . SearchIn . NAME ;
else if ( searchInLabel . equals ( "Mailbox" )) {
group = Whois . SearchIn . MAILBOX ;
} else if ( searchInLabel . equals ( "Handle" )) {
group = Whois . SearchIn . HANDLE ;
}