simpleDateFormat 쓰레드 락 걸릴 때 있다Calendar 역시 static은 쓰레드 락 걸린다FastDateFormat 쓰자 Format sdf = FastDateFormat.getInstance("yyyyMMddHHmmss", Locale.getDefault());String currDate = sdf.format(new Date()); log.debug("yyyyMMddHHmmss : " + currDate); http://stackoverflow.com/questions/6840803/simpledateformat-thread-safetyhttp://devday.tistory.com/entry/SimpleDateFormat%EA%B3%BC-Thread-Safety
for(b = i = 0 ; c = s.charCodeAt(i++) ; b += c>>7 ? 2 : 1) {return b;} value로 부터 50자리 문자 깨짐 없이 가져오기value = (function(s, b, i, c){for(b = i = 0 ; c = s.charCodeAt(i++) ; b += c>>7 ? 2 : 1){if(b == 50){return s.substring(0, i - 1); }else if(b == 51){return s.substring(0, i - 2); }}return s;})(value);
공유기 SSID 통일
-XX:MaxPermSize= 128m What is 'PermSize' in Java?http://stackoverflow.com/questions/1634216/what-is-permsize-in-java java.lang.OutOfMemoryError: PermGen space in tomcat with eclipsehttp://stackoverflow.com/questions/3179141/java-lang-outofmemoryerror-permgen-space-in-tomcat-with-eclipse
webtob/config/http.m 파일 수정 후 리스타트xlsx MimeType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", SvrType = HTMLpptx MimeType = "application/vnd.openxmlformats-officedocument.presentationml.presentation", SvrType = HTMLdocx MimeType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document", SvrType = HTML