MyEclipse7.5注册机源码大家可以通过运行的方法得到自己喜欢的注册码：
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)) { 
         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) { 
     } 
} 
}     

/* 
运行该代码，在控制台中会出现： 
please input register name: 
×××××（输入你的name，任意） 
即生成序列号： ××××× ××××× ××××× 

进入myeclipse,在菜单中选择 Myeclipse->Subscription Information    
然后 输入Subscriber和Subscription code即可。 
注册码可以用1095天 
*/