用JAVA SOCKET制作一个广播信使的程序

用JAVA SOCKET制作一个广播信使的程序(2) public ChatServer(String title)    //CONSTRUCTOR TO INITIALIZE THE
                                   //ChatServer CLASS
{
output = new TextArea (15,40);     //output IS A TextArea COMPONENT
                                   //OF THE ChatServer CLASS
output.setEditable (false);
output.setFont(f);
output.setForeground(Color.blue);

setTitle(title);         //TO SET THE TITLE OF THE CLIENT WINDOW
setJMenuBar(menuBar);    //TO INITIALIZE THE MENU BAR ON THE WINDOW
JMenu fileMenu = new JMenu("File");
JMenu colorMenu = new JMenu("Color");
JMenu helpMenu = new JMenu("Help");

//Main menu Shortcuts:
fileMenu.setMnemonic('F');
colorMenu.setMnemonic('C');
helpMenu.setMnemonic('H');

//About Dialog init:
aboutItem = new JMenuItem("About");
//aboutItem.addActionListener((ActionListener)this);
helpMenu.add(aboutItem);
addMenuItem(helpMenu,aboutAction = new AboutAction("About"));

//Initialize menu items:
menuBar.add(fileMenu);
menuBar.add(colorMenu);
menuBar.add(helpMenu);

enableEvents(AWTEvent.WINDOW_EVENT_MASK);

class AboutAction extends AbstractAction    //CREATES AN ABSTRACT
                                            //INTERNAL CLASS FOR