myeclipse 7.5 注册码

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 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, "5");
      System.out.println("Serial:" + res);
      reader.readLine();
     } catch (IOException ex) {
     }
  }
  }