打开MyEclipse新建一个Javaproject，然后新建类，粘贴例如以下代码，就可以生成MyEclipse的注冊码
import
java.io.BufferedReader;
import
java.io.IOException;
import
java.io.InputStreamReader;
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)
{
java.util.Calendar cal =
java.util.Calendar.getInstance();
cal.add(1,
3);
cal.add(6,
-1);
java.text.NumberFormat nf = new
java.text.DecimalFormat("000");
licenseNum =
nf.format(Integer.valueOf(licenseNum));
String verTime = new
StringBuilder("-").append(
new
java.text.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))
{