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ouryperd
ouryperd

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Passage of time calculations in Groovy

#groovy

The way to calculate time duration in groovy is with TimeDuration:

import groovy.time.TimeCategory import groovy.time.TimeDuration
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Short durations

Date timeStart = new Date() sleep(randNum(10000)) Date timeStop = new Date() TimeDuration durationShort = TimeCategory.minus(timeStop, timeStart) println "duration: ${durationShort}" println "duration in ms : ${durationShort.toMilliseconds()}" println "duration in millis: ${durationShort.getMillis()}" //drops the seconds println "duration in seconds: ${durationShort.getSeconds()}"
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outputs>>
duration: 9.911 seconds
duration in ms : 9911
duration in millis: 911
duration in seconds: 9

Date earlier = Date.parse('yyyy-MM-dd', "1974-08-11") //converts String to Date object Date now = new Date() TimeDuration durationLong = TimeCategory.minus(now, earlier) println "duration in days: ${durationLong.getDays()}"
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outputs>> duration in days: 17741

duration = TimeCategory.minus(now, earlier) println duration
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outputs>> 17741 days, 11 hours, 34 minutes, 5.824 seconds

The last two outputs will differ if you run it because time moves on.

This is just to get a random number of seconds, used in the first example:

def randNum(maxSize) { return Math.abs(new Random().nextInt() % maxSize) + 1 }
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