임시번호 생성(JAVA) 방법
String randomPwd = _getRandomPassword(10) private String _getRandomPassword(int len){ char[] charSet = new char[] {''0,'1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'} int idx = 0; StringBuffer sb = new StringBuffer(); for(int i = 0; i < len; i++){ idx = (int) (charSet.length * Math.random()); sb.append(c..
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