eclipse6.5 自动注册代码

 1 //注册算法：打开MYECLIPSE运行下面代码，运行结果就是注册码
 2 
 3 import java.io.BufferedReader;    
 4 import java.io.IOException;    
 5 import java.io.InputStreamReader;    
 6   
 7 public class MyEclipseGen {    
 8 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.";    
 9   
10 public String getSerial(String userId, String licenseNum) {    
11   java.util.Calendar cal = java.util.Calendar.getInstance();    
12   cal.add(1, 3);    
13   cal.add(6, -1);    
14   java.text.NumberFormat nf = new java.text.DecimalFormat("000");    
15   licenseNum = nf.format(Integer.valueOf(licenseNum));    
16   String verTime = new StringBuilder("-").append(    
17     new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime()))    
18     .append("0").toString();    
19   String type = "YE3MP-";    
20   String need = new StringBuilder(userId.substring(0, 1)).append(type)    
21     .append("300").append(licenseNum).append(verTime).toString();    
22   String dx = new StringBuilder(need).append(LL).append(userId)    
23     .toString();    
24   int suf = this.decode(dx);    
25   String code = new StringBuilder(need).append(String.valueOf(suf))    
26     .toString();    
27   return this.change(code);    
28 }    
29   
30 private int decode(String s) {    
31   int i;    
32   char[] ac;    
33   int j;    
34   int k;    
35   i = 0;    
36   ac = s.toCharArray();    
37   j = 0;    
38   k = ac.length;    
39   while (j < k) {    
40     i = (31 * i) + ac[j];    
41     j++;    
42   }    
43   return Math.abs(i);    
44 }    
45   
46 private String change(String s) {    
47   byte[] abyte0;    
48   char[] ac;    
49   int i;    
50   int k;    
51   int j;    
52   abyte0 = s.getBytes();    
53   ac = new char[s.length()];    
54   i = 0;    
55   k = abyte0.length;    
56   while (i < k) {    
57     j = abyte0[i];    
58     if ((j >= 48) && (j <= 57)) {    
59     j = (((j - 48) + 5) % 10) + 48;    
60     } else if ((j >= 65) && (j <= 90)) {    
61     j = (((j - 65) + 13) % 26) + 65;    
62     } else if ((j >= 97) && (j <= 122)) {    
63     j = (((j - 97) + 13) % 26) + 97;    
64     }    
65     ac[i] = (char) j;    
66     i++;    
67   }    
68   return String.valueOf(ac);    
69 }    
70   
71 public MyEclipseGen() {    
72   super();    
73 }    
74   
75 public static void main(String[] args) {    
76   try {    
77     System.out.println("please input register name:");    
78     BufferedReader reader = new BufferedReader(new InputStreamReader(    
79       System.in));    
80     String userId = null;    
81     userId = reader.readLine();    
82     MyEclipseGen myeclipsegen = new MyEclipseGen();    
83     String res = myeclipsegen.getSerial(userId, "5");    
84     System.out.println("Serial:" + res);    
85     reader.readLine();    
86   } catch (IOException ex) {    
87   }    
88 }    
89 }