MyEclipse_6.5.1GA_E3.3.2_Installer_注册算法
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 + "]");}}