Java 如何将毫秒转换为“毫秒”;hh:mm:ss“;格式?
我很困惑。在无意中发现了这个线程之后,我试图弄明白如何格式化一个倒计时计时器,它的格式是Java 如何将毫秒转换为“毫秒”;hh:mm:ss“;格式?,java,time-format,countdowntimer,Java,Time Format,Countdowntimer,我很困惑。在无意中发现了这个线程之后,我试图弄明白如何格式化一个倒计时计时器,它的格式是hh:mm:ss 这是我的尝试- //hh:mm:ss String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis), TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.MINUTES.toMinutes(TimeUnit.MILLISECONDS.to
hh:mm:ss
这是我的尝试-
//hh:mm:ss
String.format("%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) -
TimeUnit.MINUTES.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
因此,当我尝试像3600000ms
这样的值时,我得到了01:59:00
,这是错误的,因为它应该是01:00:00
。显然我的逻辑有问题,但目前我看不出是什么
有人能帮忙吗
编辑-
修好了。下面是将毫秒格式化为hh:mm:ss
格式的正确方法-
//hh:mm:ss
String.format("%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) -
TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))));
问题是这个
TimeUnit.MINUTES.toMinutes(TimeUnit.millises.toHours(millis))
。应该是这样的TimeUnit.HOURS.toMinutes(TimeUnit.millises.toHours(millis))
。通用方法非常简单:
public static String convertSecondsToHMmSs(long seconds) {
long s = seconds % 60;
long m = (seconds / 60) % 60;
long h = (seconds / (60 * 60)) % 24;
return String.format("%d:%02d:%02d", h,m,s);
}
你真的很接近:
您正在使用分钟而不是小时将小时转换为毫秒
顺便说一句,我喜欢你使用TimeUnit
API:)
下面是一些测试代码:
public static void main(String[] args) throws ParseException {
long millis = 3600000;
String hms = String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
System.out.println(hms);
}
输出:
01:00:00
我意识到,通过使用模除法而不是减法,我的上述代码可以大大简化:
String hms = String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) % TimeUnit.HOURS.toMinutes(1),
TimeUnit.MILLISECONDS.toSeconds(millis) % TimeUnit.MINUTES.toSeconds(1));
仍然使用
TimeUnit
API处理所有魔法值,并给出完全相同的输出。好吧,您可以尝试以下方法:
public String getElapsedTimeHoursMinutesSecondsString() {
long elapsedTime = getElapsedTime();
String format = String.format("%%0%dd", 2);
elapsedTime = elapsedTime / 1000;
String seconds = String.format(format, elapsedTime % 60);
String minutes = String.format(format, (elapsedTime % 3600) / 60);
String hours = String.format(format, elapsedTime / 3600);
String time = hours + ":" + minutes + ":" + seconds;
return time;
}
要将毫秒转换为时间值(如果使用apache commons):
DateFormat df = new SimpleDateFormat("HH:mm:ss");
String formatted = df.format(aDateObject);
DurationFormatUtils.formatDuration(timeInMS, "HH:mm:ss,SSS");
我试过了,如第一个答案所示。它起作用了,但是负让我感到困惑。Groovy给出了我的答案:
import static java.util.concurrent.TimeUnit.*
...
private static String formatElapsedTime(long millis) {
int hrs = MILLISECONDS.toHours(millis) % 24
int min = MILLISECONDS.toMinutes(millis) % 60
int sec = MILLISECONDS.toSeconds(millis) % 60
int mls = millis % 1000
sprintf( '%02d:%02d:%02d (%03d)', [hrs, min, sec, mls])
}
四种实现的测试结果 必须对海量数据进行大量格式化,需要最佳性能,因此以下是(令人惊讶的)结果: 对于(int i=0;i<1000000;i++){ 函数调用 } 持续时间:
- 组合格式化程序:196millis
- 格式化持续时间:272毫秒
- apacheFormat:754毫秒
- 格式时间单位:2216毫秒
public static String apacheFormat(long millis) throws ParseException { return DurationFormatUtils.formatDuration(millis, "HH:mm:ss"); } public static String formatTimeUnit(long millis) throws ParseException { String formatted = String.format( "%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis), TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))); return formatted; } public static String formatDuration(final long millis) { long seconds = (millis / 1000) % 60; long minutes = (millis / (1000 * 60)) % 60; long hours = millis / (1000 * 60 * 60); StringBuilder b = new StringBuilder(); b.append(hours == 0 ? "00" : hours < 10 ? String.valueOf("0" + hours) : String.valueOf(hours)); b.append(":"); b.append(minutes == 0 ? "00" : minutes < 10 ? String.valueOf("0" + minutes) : String.valueOf(minutes)); b.append(":"); b.append(seconds == 0 ? "00" : seconds < 10 ? String.valueOf("0" + seconds) : String.valueOf(seconds)); return b.toString(); } public static String combinationFormatter(final long millis) { long seconds = TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)); long minutes = TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)); long hours = TimeUnit.MILLISECONDS.toHours(millis); StringBuilder b = new StringBuilder(); b.append(hours == 0 ? "00" : hours < 10 ? String.valueOf("0" + hours) : String.valueOf(hours)); b.append(":"); b.append(minutes == 0 ? "00" : minutes < 10 ? String.valueOf("0" + minutes) : String.valueOf(minutes)); b.append(":"); b.append(seconds == 0 ? "00" : seconds < 10 ? String.valueOf("0" + seconds) : String.valueOf(seconds)); return b.toString(); }
公共静态字符串apacheFormat(长毫秒)引发异常{ 返回持续时间formatUtils.formatDuration(毫秒,“HH:mm:ss”); } 公共静态字符串formatTimeUnit(长毫秒)引发异常{ String formatted=String.format( “%02d:%02d:%02d”, 时间单位。毫秒。至小时(毫秒), 时间单位.毫秒.t分钟(毫秒) -TimeUnit.HOURS.toMinutes(TimeUnit.millises.toHours(millis)), 时间单位。毫秒。至秒(毫秒) -时间单位:分钟到秒(时间单位:毫秒到分钟(毫秒)); 返回格式; } 公共静态字符串格式持续时间(最终长毫秒){ 长秒=(毫秒/1000)%60; 长分钟=(毫秒/(1000*60))%60; 长时间=毫秒/(1000*60*60); StringBuilder b=新的StringBuilder(); b、 追加(小时数==0?“00”:小时数<10?字符串。valueOf(“0”+小时数”): String.valueOf(小时)); b、 附加(“:”); b、 追加(分钟==0?“00”:分钟<10?字符串。valueOf(“0”+分钟): String.valueOf(分钟); b、 附加(“:”); b、 追加(秒==0?“00”:秒<10?字符串。valueOf(“0”+秒): String.valueOf(秒)); 返回b.toString(); } 公共静态字符串组合格式化程序(最终长毫秒){ 长秒=时间单位。毫秒。到秒(毫秒) -TimeUnit.MINUTES.toSeconds(TimeUnit.ms.toMinutes(毫秒)); 长分钟=时间单位。毫秒。分钟(毫秒) -TimeUnit.HOURS.toMinutes(TimeUnit.millises.toHours(millis)); 长时间=时间单位。毫秒。到小时(毫秒); StringBuilder b=新的StringBuilder(); b、 追加(小时数==0?“00”:小时数<10?字符串。valueOf(“0”+小时数”): String.valueOf(小时)); b、 附加(“:”); b、 追加(分钟==0?“00”:分钟<10?字符串。valueOf(“0”+分钟): String.valueOf(分钟); b、 附加(“:”); b、 追加(秒==0?“00”:秒<10?字符串。valueOf(“0”+秒): String.valueOf(秒)); 返回b.toString(); }
请参阅使用1200毫秒的输入。下面的代码以两种方式进行转换 23:59:58:999至86398999 及 86398999至23:59:58:999
import java.util.concurrent.TimeUnit;
公共类时间实用程序{
公共静态void main(字符串[]args){
长currentDateTime=System.currentTimeMillis();
字符串strTest=“23:59:58:999”;
系统输出打印项次(strTest);
长l=strToMilli(strTest);
系统输出打印LN(l);
l+=1;
字符串str=毫字符串(l);
系统输出打印项次(str);
}
/**
*将时间字符串转换为等效的长毫秒
*
*@param strTime字符串格式为HH:MM:SS:MSMS,即“23:59:59:999”
*@返回长整数,如86399999
*/
公共静态长stromilli(字符串strTime){
长回程=0;
字符串hour=strTime.substring(0,2);
字符串min=strTime.substring(3,5);
stringsec=strTime.substring(6,8);
字符串milli=strTime.substring(9,12);
int h=整数.parseInt(小时);
int m=Integer.parseInt(最小值);
int s=整数.parseInt(秒);
int ms=整数.parseInt(毫);
String strDebug=String.format(“%02d:%02d:%02d:%03d”,h、m、s、ms);
//System.out.println(strDebug);
长lH=h*60*60*1000;
长lM=m*60*1000;
长lS=s*1000;
retVal=lH+lM+lS+ms;
返回返回;
}
/**
*将时间(以毫秒为单位)转换为相应的字符串(以天为单位)
*翻滚从头开始23:59:59:999+1=00:00:00:000
*
*@param millis是与tim对应的毫秒数,即。
*34137999,可通过以下方式获得:;
*
*
public static String apacheFormat(long millis) throws ParseException {
return DurationFormatUtils.formatDuration(millis, "HH:mm:ss");
}
public static String formatTimeUnit(long millis) throws ParseException {
String formatted = String.format(
"%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis)
- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis)
- TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
return formatted;
}
public static String formatDuration(final long millis) {
long seconds = (millis / 1000) % 60;
long minutes = (millis / (1000 * 60)) % 60;
long hours = millis / (1000 * 60 * 60);
StringBuilder b = new StringBuilder();
b.append(hours == 0 ? "00" : hours < 10 ? String.valueOf("0" + hours) :
String.valueOf(hours));
b.append(":");
b.append(minutes == 0 ? "00" : minutes < 10 ? String.valueOf("0" + minutes) :
String.valueOf(minutes));
b.append(":");
b.append(seconds == 0 ? "00" : seconds < 10 ? String.valueOf("0" + seconds) :
String.valueOf(seconds));
return b.toString();
}
public static String combinationFormatter(final long millis) {
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis)
- TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis));
long minutes = TimeUnit.MILLISECONDS.toMinutes(millis)
- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis));
long hours = TimeUnit.MILLISECONDS.toHours(millis);
StringBuilder b = new StringBuilder();
b.append(hours == 0 ? "00" : hours < 10 ? String.valueOf("0" + hours) :
String.valueOf(hours));
b.append(":");
b.append(minutes == 0 ? "00" : minutes < 10 ? String.valueOf("0" + minutes) :
String.valueOf(minutes));
b.append(":");
b.append(seconds == 0 ? "00" : seconds < 10 ? String.valueOf("0" + seconds) :
String.valueOf(seconds));
return b.toString();
}
// New date object from millis
Date date = new Date(millis);
// formattter
SimpleDateFormat formatter= new SimpleDateFormat("HH:mm:ss.SSS");
formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
// Pass date object
String formatted = formatter.format(date );
import java.util.concurrent.TimeUnit;
public class TimeUtility {
public static void main(String[] args) {
long currentDateTime = System.currentTimeMillis();
String strTest = "23:59:58:999";
System.out.println(strTest);
long l = strToMilli(strTest);
System.out.println(l);
l += 1;
String str = milliToString(l);
System.out.println(str);
}
/**
* convert a time string into the equivalent long milliseconds
*
* @param strTime string fomratted as HH:MM:SS:MSMS i.e. "23:59:59:999"
* @return long integer like 86399999
*/
public static long strToMilli(String strTime) {
long retVal = 0;
String hour = strTime.substring(0, 2);
String min = strTime.substring(3, 5);
String sec = strTime.substring(6, 8);
String milli = strTime.substring(9, 12);
int h = Integer.parseInt(hour);
int m = Integer.parseInt(min);
int s = Integer.parseInt(sec);
int ms = Integer.parseInt(milli);
String strDebug = String.format("%02d:%02d:%02d:%03d", h, m, s, ms);
//System.out.println(strDebug);
long lH = h * 60 * 60 * 1000;
long lM = m * 60 * 1000;
long lS = s * 1000;
retVal = lH + lM + lS + ms;
return retVal;
}
/**
* convert time in milliseconds to the corresponding string, in case of day
* rollover start from scratch 23:59:59:999 + 1 = 00:00:00:000
*
* @param millis the number of milliseconds corresponding to tim i.e.
* 34137999 that can be obtained as follows;
* <p>
* long lH = h * 60 * 60 * 1000; //hour to milli
* <p>
* long lM = m * 60 * 1000; // minute to milli
* <p>
* long lS = s * 1000; //seconds to milli
* <p>
* millis = lH + lM + lS + ms;
* @return a string formatted as HH:MM:SS:MSMS i.e. "23:59:59:999"
*/
private static String milliToString(long millis) {
long hrs = TimeUnit.MILLISECONDS.toHours(millis) % 24;
long min = TimeUnit.MILLISECONDS.toMinutes(millis) % 60;
long sec = TimeUnit.MILLISECONDS.toSeconds(millis) % 60;
//millis = millis - (hrs * 60 * 60 * 1000); //alternative way
//millis = millis - (min * 60 * 1000);
//millis = millis - (sec * 1000);
//long mls = millis ;
long mls = millis % 1000;
String toRet = String.format("%02d:%02d:%02d:%03d", hrs, min, sec, mls);
//System.out.println(toRet);
return toRet;
}
}
String.format("%1$tH:%1$tM:%1$tS.%1$tL", millis);
String hms = String.format("%02d:%02d:%02d", millisLeft/(3600*1000),
millisLeft/(60*1000) % 60,
millisLeft/1000 % 60);
String string = String.format("%02d:%02d:%02d.%03d",
TimeUnit.MILLISECONDS.toHours(millisecend), TimeUnit.MILLISECONDS.toMinutes(millisecend) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisecend)),
TimeUnit.MILLISECONDS.toSeconds(millisecend) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisecend)), millisecend - TimeUnit.SECONDS.toMillis(TimeUnit.MILLISECONDS.toSeconds(millisecend)));
public String millsToDateFormat(long mills) {
Date date = new Date(mills);
DateFormat formatter = new SimpleDateFormat("HH:mm:ss");
String dateFormatted = formatter.format(date);
return dateFormatted; //note that it will give you the time in GMT+0
}
String myTime = String.format("%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) -
TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), // The change is in this line
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
417474:44:19
String myTime = String.format("%02d:%02d:%02d",
//Hours
TimeUnit.MILLISECONDS.toHours(millis) -
TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS.toDays(millis)),
//Minutes
TimeUnit.MILLISECONDS.toMinutes(millis) -
TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
//Seconds
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));
18:44:19
Date myDate = new Date(timeinMillis);
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
String myTime = formatter.format(myDate);
Duration timeLeft = Duration.ofMillis(3600000);
String hhmmss = String.format("%02d:%02d:%02d",
timeLeft.toHours(), timeLeft.toMinutesPart(), timeLeft.toSecondsPart());
System.out.println(hhmmss);
long hours = timeLeft.toHours();
timeLeft = timeLeft.minusHours(hours);
long minutes = timeLeft.toMinutes();
timeLeft = timeLeft.minusMinutes(minutes);
long seconds = timeLeft.toSeconds();
String hhmmss = String.format("%02d:%02d:%02d", hours, minutes, seconds);
System.out.println(hhmmss);
val hours = String.format("%02d", TimeUnit.MILLISECONDS.toHours(milSecs))
val minutes = String.format("%02d",
TimeUnit.MILLISECONDS.toMinutes(milSecs) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(milSecs)))
val seconds = String.format("%02d",
TimeUnit.MILLISECONDS.toSeconds(milSecs) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(milSecs)))
fun formatToDigitalClock(miliSeconds: Long): String {
val hours = TimeUnit.MILLISECONDS.toHours(miliSeconds).toInt() % 24
val minutes = TimeUnit.MILLISECONDS.toMinutes(miliSeconds).toInt() % 60
val seconds = TimeUnit.MILLISECONDS.toSeconds(miliSeconds).toInt() % 60
return when {
hours > 0 -> String.format("%d:%02d:%02d", hours, minutes, seconds)
minutes > 0 -> String.format("%02d:%02d", minutes, seconds)
seconds > 0 -> String.format("00:%02d", seconds)
else -> {
"00:00"
}
}
}