激活MyEclipse 6.5方法-通过一段Java程序生成激活码

在MyEclipse中新建一个Java类，名为MyEclipseKeyGen，将下面的Java代码拷贝到MyEclipseKeyGen类中，先修改变量subscriber的值，然后运行程序即可获得Subscription Code。将subscriber和subscriptionCode输入上图所示区域，点击“OK”，即可激活MyEclipse6.5（通过测试，本人已成功激活）。其他的MyEclipse版本暂没有测试过。

 import java.text.DecimalFormat;
 import java.text.NumberFormat;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;

 public class MyEclipseKeyGen {

     public static final void main(String[] args){
         String subscriber = "yuxinwangjing";  //subscriber
         String licenseNum = "500";  //Number of Licenses
         String version = "100"; //版本号
         String subscriptionCode = getSubscriptionCode(subscriber, version , licenseNum ,true);
         System.out.println(subscriptionCode);
     }

     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);
     }
 }