Java converts seconds to time
I want to create a library because I cannot find one to convert seconds or milliseconds to time. Over time, I mean:
1) If I have 61 seconds, the time format will be: 1:01 (not 1: 1)
2) If I have the equivalent of 1 hour and 1 minute, I want it to show the same: 1:01:00
I achieved this by creating the following structure:
public String secondsToTime(int seconds){
String format = "";
int currentMinutes = 0, currentHour = 0;
if((seconds / 60) > 0 ) {
currentMinutes = seconds / 60;
seconds = seconds - currentMinutes * 60;
}
if(currentMinutes >= 60)
{
currentHour = currentMinutes / 60;
currentMinutes = currentMinutes - currentHour * 60;
}
if(currentHour == 0) {
if(currentMinutes < 10 && seconds < 10)
format = "0"+currentMinutes+":0"+seconds;
else if(currentMinutes > 9 && seconds < 10)
format = currentMinutes+":0"+seconds;
else if(currentMinutes > 9 && seconds > 9)
format = currentMinutes+":"+seconds;
else if(currentMinutes < 10 && seconds > 9)
format = "0"+currentMinutes+":"+seconds;
}
else
{
Log.i("TEST", "Current hour este" + currentHour);
if(currentMinutes < 10 && seconds < 10)
format = currentHour+":0"+currentMinutes+":0"+seconds;
else if(currentMinutes > 9 && seconds < 10)
format = currentHour+":"+currentMinutes+":0"+seconds;
else if(currentMinutes > 9 && seconds > 9)
format = currentHour+":"+currentMinutes+":"+seconds;
else if(currentMinutes < 10 && seconds > 9)
format = currentHour+":0"+currentMinutes+":"+seconds;
}
return format;
}
Is there a faster way to do this?
These questions are not repeated because it is java.util.concurrent.TimeUnit
not standard if you want to display the format that I want. I agree that it does the conversions for you, but I still need a lot of if statements to check every time if there is an hour or not. I can display my minutes with only 1 character and not display the hour because it doesn't matter to have 00 hour.
I am doing this search and asking these questions because I want to use this algorithm in the media player on Android
to show the total song time and the current second song.
For example, I have several mixes that have more than an hour and music with a few minutes, it doesn't matter to show the total playing time of the music file 00:02:30, the correct way is 2:30 because there is no hour (hour == 0), also if the music file has 2 minutes and 3 seconds, it is not correct to say 2: 3, the correct path is 2:03.
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Just convert it to String and strip off leading characters if they are "0" or ":"
DateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
String myDate = dateFormat.format(new Date(TimeUnit.SECONDS.toMillis(seconds)));
while (( myDate.charAt(0).equals("0") || myDate.charAt(0).equals(":")){
myDate = myDate.substring(1);
}
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How about this:
/**
* @author Alexey Belov
*/
public class DateFormatTest {
private String format(int seconds) {
final DateFormat dateFormat;
if (seconds < 60) {
dateFormat = new SimpleDateFormat("ss");
} else if (seconds < 60 * 60) {
dateFormat = new SimpleDateFormat("m:ss");
} else {
dateFormat = new SimpleDateFormat("H:mm:ss");
}
final Calendar gmt = Calendar.getInstance(Locale.ENGLISH);
gmt.set(1970, Calendar.JANUARY, 1, 0, 0, 0);
gmt.add(Calendar.SECOND, seconds);
return dateFormat.format(gmt.getTime());
}
@Test
public void test10100() {
Assert.assertEquals("1:01:00", format(60 * 60 + 60));
}
@Test
public void test101() {
Assert.assertEquals("1:01", format(61));
}
@Test
public void test01() {
Assert.assertEquals("01", format(1));
}
@Test
public void test120000() {
Assert.assertEquals("12:00:00", format(60 * 60 * 12));
}
}
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