myeclipse6.01注册码

  
//注册码生成器
public class Demo{ 

     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 Demo(){ 

         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(); 

             Demo myeclipsegen = new Demo(); 

             String res = myeclipsegen.getSerial(userId, "20"); 

             System.out.println("Serial:" + res); 

             reader.readLine(); 

        } catch (IOException ex) { 

         } 

     } 

}