爆栈网大佬的建议是直接用 DateTimeFormatterBuilder.appendValue 来代替 pattern 直接写。
// Convert input date to time field list calendar.setTime(date); boolean useDateFormatSymbols = useDateFormatSymbols(); for (int i = 0; i < compiledPattern.length; ) { int tag = compiledPattern[i] >>> 8; int count = compiledPattern[i++] & 0xff; if (count == 255) { count =...
List<String> timesList =Lists.newArrayList(); DateTimeFormatter format; DateTime beginDateTime; DateTime endDateTime;//计算两个天数直接所有天数if(TYPE_DAY.equals(type)) {//格式化时间,避免计算误差format =DateTimeFormat.forPattern(PATTERN_DATE); beginDateTime=format.parseDateTime(beginTime); endDateTime=...
java DateTimeFormatter线程安全 java pattern 线程安全 1.1. 什么是线程安全 如果有多个线程同时运行同一个实现了Runnable接口的类,程序每次运行结果和单线程运行的结果是一样的,而且其他的变量的值也和预期的是一样的,就是线程安全的;反之,则是线程不安全的。 1.2. 问题演示 为了演示线程安全问题,我们采用多线程模拟...
import java.time.format.DateTimeFormatter; import java.util.Locale; void main() { var now = LocalDateTime.now(); String pattern = "EEEE, MMM dd, yyyy HH:mm:ss a"; var dtf1 = DateTimeFormatter.ofPattern(pattern, Locale.CHINA); var dtf2 = DateTimeFormatter.ofPattern(pattern, Locale.of("RU...
DateTimeFormatter 的所有格式化器都是用DateTimeFormatterBuilder 建造器类创建的。看下面两个ofPattern 源码：//DateTimeFormatterpublicstaticDateTimeFormatterofPattern(String pattern){ returnnewDateTimeFormatterBuilder().appendPattern(pattern).toFormatter();}publicstaticDateTimeFormatterofPattern(String pattern,Locale locale){...
DateTimeFormatter the date formatter, not null Attributes RegisterAttribute Remarks Returns a locale specific date format for the ISO chronology. This returns a formatter that will format or parse a date. The exact format pattern used varies by locale. The locale is determined from the formatter...
*@return时间词语*/publicList<String>analysis(String text){ Matcher match;intstartline = -1, endline = -1; List<String> tempResult =newArrayList<>(); tempResult.add("");intrpointer = 0;//计数器,记录当前识别到哪一个字符串了match=pattern.matcher(text);booleanstartmark =true;while(match....
LocalDate date = LocalDate.now(); DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy MM dd"); String text = date.format(formatter); LocalDate parsedDate = LocalDate.parse(text, formatter); All letters 'A' to 'Z' and 'a' to 'z' are reserved as pattern letters. The following...
ofPattern(pattern); return LocalDateTime.parse(localDateTimeStr, dateTimeFormatter); } /** * 日期字符串转换为日期(java.time.LocalDate) * * @param localDateStr 日期字符串 * @param pattern 日期格式 例如DATE_PATTERN * @return LocalDate 日期 */ public static LocalDate parseLocalDate(String local...