網上找的，僅供學習參考~~~
import?java.io.*;
public?class?MyEclipseGen?{
????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?=?0;
????????k?=?ac.length;
????????while?(j?<?k)?{
????????????i?=?(31?*?i)?+?ac[j];
????????????j++;
????????}
????????return?Math.abs(i);
????}
????private?String?change(String?s)?{
????????byte[]?abyte0;
????????char[]?ac;
????????int?i;
????????int?k;
????????int?j;
????????abyte0?=?s.getBytes();
????????ac?=?new?char[s.length()];
????????i?=?0;
????????k?=?abyte0.length;
????????while?(i?<?k)?{
????????????j?=?abyte0[i];
????????????if?((j?>=?48)?&&?(j?<=?57))?{
????????????????j?=?(((j?-?48)?+?5)?%?10)?+?48;
????????????}?else?if?((j?>=?65)?&&?(j?<=?90))?{
????????????????j?=?(((j?-?65)?+?13)?%?26)?+?65;
????????????}?else?if?((j?>=?97)?&&?(j?<=?122))?{
????????????????j?=?(((j?-?97)?+?13)?%?26)?+?97;
????????????}
????????????ac[i]?=?(char)?j;
????????????i++;
????????}
????????return?String.valueOf(ac);
????}
????public?MyEclipseGen()?{
????????super();
????}
????public?static?void?main(String[]?args)?{
????????try?{
????????????System.out.println("please?input?register?name:");
????????????BufferedReader?reader?=?new?BufferedReader(new?InputStreamReader(System.in));
????????????String?userId?=?null;
????????????userId?=?reader.readLine();
????????????MyEclipseGen?myeclipsegen?=?new?MyEclipseGen();
????????????String?res?=?myeclipsegen.getSerial(userId,?"20");
????????????System.out.println("Serial:"?+?res);
????????????reader.readLine();
????????}?catch?(IOException?ex)?{
????????}
????}
}
posted on 2008-04-21 23:33
xiaosilent 閱讀(438)
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