本文是轉自其它博文，用以留著備份的~

Step：

1、建立一個任意名稱的Java Project

2、在該工程中建立一個名文MyEclipseGen的Java文件(MyEclipseGen.java)

3、運行下面的代碼，會在控制臺出現"?please input register name:"，輸入任意一個名字，回車后生成序列號

4、點擊 MyEclipse菜單中Window→Preferences→MyEclipse→Subscription?，在右側點擊“Enter Subscription”

5、在彈出框中Subscriber中輸入第3步的名字，在Subscription Code中輸入第3步生成的序列號

Code：

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) { ???} } }

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