[java]
package com.jadyer.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
/**
* MyEclipse_6.5.1GA_E3.3.2_Installer_注册算法
* @create Oct 23, 2012 9:48:29 AM
* @author 玄玉<http://blog.csdn/net/jadyer>
*/
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) {
Calendar cal = Calendar.getInstance();
cal.add(1, 3);
cal.add(6, -1);
NumberFormat nf = new DecimalFormat("000");
licenseNum = nf.format(Integer.valueOf(licenseNum));
String verTime = new StringBuilder("-").append(new 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) throws IOException {
System.out.println("Please Input Register Name:");
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String serialNo = new MyEclipseGen().getSerial(br.readLine(), "1");
br.close();
System.out.println("Your SerialNo Is:[" + serialNo + "]");
}
}
