MyEclipse版本号生成

package com.jiuqi;


import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class Test {  
public static final void main(String[] args){          
String subscriber = "xuhaiyang";  //subscriber        
String licenseNum = "500";  //Number of Licenses        
String version = "100"; //版本号        
String subscriptionCode = getSubscriptionCode(subscriber, version , licenseNum ,true);        
System.out.println(subscriptionCode);  //gLR8ZO-655055-62677056522757051   
}      
public static String getSubscriptionCode(
String subscriber, String version,             
String licenseNum, boolean selected) {         
Calendar cal = Calendar.getInstance();         
cal.add(1, 3);  //年份加三年       
cal.add(6, -1);  //日期减一        
//当前日期20141226，到期日期则为20171225       
NumberFormat nf = new DecimalFormat("000");          
licenseNum = nf.format(Integer.valueOf(licenseNum));          
String verTime = selected ? (new StringBuffer("-")).
append((new SimpleDateFormat("yyMMdd")).format(cal.getTime()))
.append("0").toString() : "-0812310";         
String type = "YE3MB-";          
String need = (new StringBuffer(String.valueOf(subscriber.substring(0, 1))))
    .append(type).append(version).append(licenseNum)                 
    .append(verTime).toString();          
String dx = (new StringBuffer(String.valueOf(need)))                  
    .append( "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.") 
    .append(subscriber).toString();          
int suf = decode(dx);          
String code = (new StringBuffer(String.valueOf(need)))
.append( String.valueOf(suf)).toString();         
return change(code);      
}     
private static int decode(String s) {         
int i = 0;         
char ac[] = s.toCharArray();          
int j = 0;          
for (int k = ac.length; j < k; j++)              
i = 31 * i + ac[j];        
return Math.abs(i);     
}     
private static String change(String s) {         
byte abyte0[] = s.getBytes();          
char ac[] = new char[s.length()];          
int i = 0;          
for (int k = abyte0.length; i < k; i++) {              
int 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;         
}         
return String.valueOf(ac);      
}
}