最近开始投入精力学习Java，网上download一个开发工具Myeclipse7.5，甚是强大。只是该软件为收费软件。在java的共享世界让人闹心。时不时弹出个注册框，惹人烦躁。
一直想怎么才能让Myeclipse7.5不再弹出注册框。在谷歌帮助下找到如下一段代码
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 (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)) {
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 = null;
userId = reader.readLine();
MyEclipseGen myeclipsegen = new MyEclipseGen();
String res = myeclipsegen.getSerial(userId, "20");
System.out.println("Serial:" + res);
reader.readLine();
} catch (IOException ex) {
}
}
}
在Myeclipse7.5中新建一个Java Project，取'任意’名
然后在这个‘任意”项目下建立一个Java Class名字为‘MyEclipseGen’，将上段代码粘贴进去。
完成后运行'MyEclipseGen'.
在控制台中会询问你login username
输入任意用户名回车后，得到一串字符。
进入MyEclipse,MyEclipse-->Subscription Information,然后输入Subscripter和Subscription
Code即可
可以查看注册信息Subscription Details
关掉MyEclipse7.5自动更新(网上百度加自己整理)
通用的做法
（1）关掉maven自动更新：
window-preferences-MyEclipse Enterprise Workbench-Maven4MyEclipse-Maven,
关闭所有Download和Update开头的选项，共四项（去掉前面的勾）
（2）关闭更新调度：window –> preferences –> General –> Startup and Shutdown –> Automatic Updates Scheduler（去掉前面的勾）
（3）window –> preferences –>MyEclipse Enterprise Workbench->Myeclipse Dashboard,关闭Show……on start
关闭一些不需要用的插件，可以让你的MyEclipse启动提速。方法如下:
window –> preferences –> General –> Startup and Shutdown .
在右侧的列表中选择你不需要的插件，去掉前面的钩，点击Apply，然后OK即可。
MyEclipse7.5关闭在打开就不会在更新了