import java.io.*; publicclass Main...{ privatestaticfinal String L ="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."; publicstaticvoid main(String[] args) ...{ BufferedReader br =new BufferedReader(new InputStreamReader(System.in)); String userId="",version="",need=""; System.out.print("please input the username:"); try...{ userId=br.readLine(); System.out.println(); }catch(Exception e)...{ } System.out.println("1 - MyEclipse4.0.0 GA"); System.out.println("2 - MyEclipse4.1 GA"); System.out.println("3 - MyEclipse4.9.1"); System.out.println("4 - MyEclipse5.1.0 GA"); System.out.println(); System.out.print("please choose the version of MyEclipse:"); try...{ version=br.readLine(); int v = Integer.parseInt(version); switch(v)...{ case1:need = userId.substring(0,1) +"YE3MP-400-01-9912310";break; case2:need = userId.substring(0,1) +"YE3MP-401-00-9912310";break; case3:need = userId.substring(0,1) +"YE3MP-491-01-9912310";break; case4:need = userId.substring(0,1) +"YE3MP-501-00-9912310";break; } }catch(Exception e)...{ } // 其中491(4.9.1)/400(4.0)/401(4.1)/501(5.1.0),()内为版本号,9912310代表注册码过期时间2099/12/31 // MyEclipse4.0.0 GA // String need = userId.substring(0,1) + "YE3MP-400-01-9912310"; // MyEclipse4.1 GA // String need = userId.substring(0,1) + "YE3MP-401-00-9912310"; // MyEclipse4.9.1 // String need = userId.substring(0,1) + "YE3MP-491-01-9912310"; // MyEclipse5.1.0 GA // String need = userId.substring(0,1) + "YE3MP-501-00-9912310"; String dx = need + L + userId; int suf = decode(dx); // System.out.println("SUF:"+suf); String code = need + suf; System.out.println(" The result is:"); System.out.println(change(code)); System.out.println(" The time up to 2099/12/31"); } staticint decode(String s) ...{ int i =0; char ac[] = s.toCharArray(); int j =0; for (int k = ac.length; j < k; j++) ...{ i =31* i + ac[j]; } return Math.abs(i); } static String change(String s) ...{ byte abyte0[] = s.getBytes(); char ac[] =newchar[s.length()]; int i =0; for (int k = abyte0.length; i < k; i++) ...{ int j = abyte0[i]; if (j >=48&& j <=57) j = ((j -48) +5) %10+48; elseif (j >=65&& j <=90) j = ((j -65) +13) %26+65; elseif (j >=97&& j <=122) j = ((j -97) +13) %26+97; ac[i] = (char) j; } return String.valueOf(ac); } }