Convert Date/Time for given Timezone - java

Question

I want to convert this GMT time stamp to GMT+13:

2011-10-06 03:35:05

I have tried about 100 different combinations of DateFormat, TimeZone,

Answer 1

To find duration or time interval with two different time zone

import org.joda.time.{DateTime, Period, PeriodType}

val s1 = "2019-06-13T05:50:00-07:00"
val s2 = "2019-10-09T11:30:00+09:00"    

val period = new Period(DateTime.parse(s1), DateTime.parse(s2), PeriodType dayTime())

period.getDays
period.getMinutes
period.getHours

output period = P117DT13H40M

days = 117
minutes = 40
hours = 13