MyEclipse的注册码 以及jdk环境变量的配置

MyEclipse的注册码

方法一：

Leung

YLR8ZC-855550-68587756452832028

方法二：

1.通过java代码运行可以得到你想要的注册码

    a.安装jdk

    b.然后配置环境变量

       在我的电脑（右键）－－>系统属性（高级）－－>环境变量－－>在系统变量里面添加

JAVA_HOME=C:/Program Files/Java/jdk1.5.0_09

Path=%JAVA_HOME%/bin;%CATALINA_HOME%/bin;%SystemRoot%/system32;%SystemRoot%;%SystemRoot%/System32/Wbem

CLASSPATH=.;%JAVA_HOME%/lib;%JAVA_HOME%/lib/dt.jar;%JAVA_HOME%/lib/tools.jar;%CATALINA_HOME%/common/lib;%CATALINA_HOME%/common/lib/jsp-api.jar;%CATALINA_HOME%/common/lib/servlet-api.jar

    c.然后在命令行里面运行Java 文件

文件如下 MyEclipseGen.Java

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)) {     
     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, "5");     
    System.out.println("Serial:" + res);     
    reader.readLine();     
   } catch (IOException ex) {     
   }     
}     
}    

注：若文件在D盘的Leung下面，就直接命令行－－>cmd-->D:-->cd Leung－－>javac MyEclipseGen.java-->java MyEclipseGen-->输入你想的名字比如Liang Yi就得到－>YLR8ZC-855550-68595356648508237