Java程序的问题

这是一段我参考的Java程序字段，已经调试可以通Eclipse运行了，代码有点看不懂，哪位高手可以帮我做个中文注释？谢谢啦~~
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
public class IPBanner {
        public static final String NETSTAT = "netstat -nt";  //$NON-NLS-1$
        public static final String IP_INSERT = "iptables -I INPUT -i eth0 -j DROP -p tcp --dport 80 -s ";  //$NON-NLS-1$
        public static final String IP_DEL = "iptables -D INPUT -i eth0 -j DROP -p tcp --dport 80 -s ";  //$NON-NLS-1$
        public static final String HOST_IP = "192.168.16.243:80";  //$NON-NLS-1$
        public static final long BAN_TIMEOUT = 30 * 60 * 1000L;
        public static final long BAN_INTERVAL = 30 * 1000L;
        public static final int CONCURRENT = 80;
        public static final int SYN_CONCURRENT = 8;
        public static final Map banMap = new HashMap();
       
        public static void ban()throws Exception{
                Set banList = dynamicBanIP();
                System.out.println();
                System.out.println("Time: " + new Date());  //$NON-NLS-1$
    &n