认识达内从这里开始

1、建立JAVA Project，随便命名，只要符合规则就行。

2、在刚刚建好的Project右击src，新建一个类，命名为MyEclipseGen，把.java里本来有的代码全部删掉，再把下面的代码复制到文件中。运行，按照提示输入一串字符，建议取名字的首字母，然后回车，会出现一串注册码，然后复制注册码。

3、然后MyEclipse --> Subscription Information，按提示第一行输入你刚刚输入的字符串，第二行粘贴注册码即可。

如果成功的话应该会发现如下提示，点击finish结束，恭喜你成功啦！！

CSDN里的代码里有标号。。很麻烦。。我把标号去掉了。。

import java.io.*;

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 (#/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 f = new java.text.DecimalFormat("000");

licenseNum = f.format(Integer.valueOf(licenseNum));

String verTime = ew StringBuilder("-").append(

new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime()))

.append("0").toString(); String type = "YE3MP-";

String need = ew 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 = ew 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) {

try {

System.out.println("please input register name:");

BufferedReader reader = new BufferedReader(new InputStreamReader(

System.in));

String userId = ull;

userId = reader.readLine();

MyEclipseGen myeclipsegen = new MyEclipseGen();

String res = myeclipsegen.getSerial(userId, "20");

System.out.println("Serial:" + res);

reader.readLine();

} catch (IOException ex) {

}

}

}