MyEclipse6.5注册不了解决方案

import java.text.DecimalFormat;import java.text.NumberFormat;import java.text.SimpleDateFormat;import java.util.Calendar;public class Crack {    public static final void main(String[] args){        String id="zhangzunwei";        String num="999";        System.out.println(getSerial(id,"100",num,false));    }    public static String getSerial(String userId, String version,            String licenseNum, boolean selected) {        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 = selected ? (new StringBuffer("-")).append(                (new SimpleDateFormat("yyMMdd")).format(cal.getTime())).append(                "0").toString() : "-1012310";        String type = "YE3MB-";        String need = (new StringBuffer(String.valueOf(userId.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(userId).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);    }}