myeclipse6.0注册码

package aa;

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) {
      }
   }
}