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 1.Ê×ÏÈ´´½¨Ò»¸ö¹¤³ÌËæ±ãÃüÃû¡£
2.´´½¨Ò»¸öÀàÃüÃûΪReg.
3.Ö´ÐдúÂë
4.ÊäÈë×¢²áµÄÐÕÃû£¬ÏÔʾÀ¸Ä¿»á³öÏÖplease input register name:£¬Ö»ÒªÊäÈëÓ¢ÎÄÃûÈ»ºó»Ø³µ£¬×¢²áÂë¾Í³öÀ´ÁË¡£°ÑÐÕÃûºÍ×¢²áÂëÏñ£º
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Reg {
 private static final String LL = "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.";
 public String getSerial(String userId, String licenseNum) {
  java.util.Calendar cal = java.util.Calendar.getInstance();
  cal.add(1, 3);
  cal.add(6, -1);
  java.text.NumberFormat nf = new java.text.DecimalFormat("000");
  licenseNum = nf.format(Integer.valueOf(licenseNum));
  String verTime = new StringBuilder("-").append(
    new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime()))
    .append("0").toString();
  String type = "YE3MP-";
  String need = new StringBuilder(userId.substring(0, 1)).append(type)
    .append("300").append(licenseNum).append(verTime).toString();
  String dx = new StringBuilder(need).append(LL).append(userId)
    .toString();
  int suf = this.decode(dx);
  String code = new StringBuilder(need).append(String.valueOf(suf))
    .toString();
  return this.change(code);
 }
 private int decode(String s) {
  int i;
  char[] ac;
  int j;
  int k;
  i = 0;
  ac = s.toCharArray();
  j


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