Package dk.netarkivet.common.utils
Class TimeUtils
- java.lang.Object
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- dk.netarkivet.common.utils.TimeUtils
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public class TimeUtils extends Object
Various utilities for waiting some time.
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Field Summary
Fields Modifier and Type Field Description static long
DAY_IN_HOURS
Constant for the number of hours per day: 24.static long
HOUR_IN_MINUTES
Constant for the number of minutes per hour: 60.static long
MINUTE_IN_SECONDS
Constant for the number of seconds per minute: 60.static long
SECOND_IN_MILLIS
Constant for the number of milliseconds per second: 1000.static long
WEEK_IN_DAYS
Constant for the number of days per week: 7.
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Constructor Summary
Constructors Constructor Description TimeUtils()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static void
exponentialBackoffSleep(int attempt)
Sleep for an exponentially backing off amount of time, in milliseconds.static void
exponentialBackoffSleep(int attempt, int timeunit)
Sleep for an exponentially backing off amount of time.static String
readableTimeInterval(long millis)
Method for translating a time in milliseconds to a human readable String.
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Field Detail
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SECOND_IN_MILLIS
public static final long SECOND_IN_MILLIS
Constant for the number of milliseconds per second: 1000.- See Also:
- Constant Field Values
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MINUTE_IN_SECONDS
public static final long MINUTE_IN_SECONDS
Constant for the number of seconds per minute: 60.- See Also:
- Constant Field Values
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HOUR_IN_MINUTES
public static final long HOUR_IN_MINUTES
Constant for the number of minutes per hour: 60.- See Also:
- Constant Field Values
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DAY_IN_HOURS
public static final long DAY_IN_HOURS
Constant for the number of hours per day: 24.- See Also:
- Constant Field Values
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WEEK_IN_DAYS
public static final long WEEK_IN_DAYS
Constant for the number of days per week: 7.- See Also:
- Constant Field Values
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Method Detail
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exponentialBackoffSleep
public static void exponentialBackoffSleep(int attempt)
Sleep for an exponentially backing off amount of time, in milliseconds. Thus the first attempt will sleep for 1 ms, the second for 2, the third for 4, etc.- Parameters:
attempt
- The attempt number, which is the log2 of the number of milliseconds spent asleep.
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exponentialBackoffSleep
public static void exponentialBackoffSleep(int attempt, int timeunit)
Sleep for an exponentially backing off amount of time. The mode describes the unit of time as defined by @see java.util.Calendar- Parameters:
attempt
- The attempt number, which is the log2 of the number of timeunits spent asleep.timeunit
- the specified timeunit in miliseconds- Throws:
ArgumentNotValid
- if timeunit is unsupported.
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readableTimeInterval
public static String readableTimeInterval(long millis)
Method for translating a time in milliseconds to a human readable String. E.g. the argument "604800000" should result in "7 days".- Parameters:
millis
- The amount of milliseconds.- Returns:
- The human readable string.
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