Java获取当前时间的几种方式_java获取当前日期

1.Date类

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");  // 格式化
Date date = new Date();
System.out.println(sdf.format(date));  // 2023-10-23 08:36:20
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2.日历类（Calendar）

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");  // 格式化
Calendar calendar = Calendar.getInstance();
System.out.println(sdf.format(calendar.getTime()));  // 2023-10-23 08:36:20
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3.日历类分别获取年月日时分秒

int year = calendar.get(Calendar.YEAR); //获取当前年份
int mon = calendar.get(Calendar.MONTH); //获取当前月份 0-11月
if (mon < 12) {
    mon += 1;
}
int day = calendar.get(Calendar.DATE); //获取当前日
int hour = calendar.get(Calendar.HOUR_OF_DAY); //获取当前时
int minute = calendar.get(Calendar.MINUTE); //获取当前分
int second = calendar.get(Calendar.SECOND); //获取当前秒
System.out.println(year + "-" + mon + "-" + day + " " + hour + ":" + minute + ":" + second);  // 2023-10-23 20:36:20
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4.LocalDate类

//获取当前日期
LocalDate localDate = LocalDate.now();
System.out.println(localDate);  // 2023-10-23
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