最典型的任务分摊型多线程

class TCPThread extends Thread
{   
    //这三个静态属性，在外部被通过TCPThread.Min_port设置
    public static InetAddress hostAddress;
    public static int MIN_Port;
    public static int MAX_Port;
    public static int MAX_Thread;
    private int threadnum; 

    private ScanFrame frame; 
              // ScanFrame 是swing的图形窗口Frame子类,这里简略不列出ScanFrame的代码 

    public TCPThread(String name,int threadnum,ScanFrame frame){        
        super(name);        
        this.threadnum = threadnum;
        this.frame=frame;
    }    
    
    public void run()
    {
        int i;        
        Socket theTCPsocket;
        for (i = MIN_Port+threadnum; i < MAX_Port; i += MAX_Thread)
        {
            frame.label_Status.setText("状态:扫描 "+i+" 端口");
            ...