MyEclipse注册源代码

import java.io.BufferedReader;  import java.io.IOException;  import java.io.InputStreamReader;    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 the Subscriber:");              BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));              String userId = null;              userId = reader.readLine();              MyEclipseGen myeclipsegen = new MyEclipseGen();              String res = myeclipsegen.getSerial(userId, "5");              System.out.println("Subscription Code: " + res);              reader.readLine();          }          catch (IOException ex) {          }      }  }