java - Does Hibernate 4.x+ support Calendar objects whose time zones have been changed? -


i have been trying debug program while. , think may problem hibernates support calendar objects. example,

@entity @table(name="table") public class model {     @id     @generatedvalued(strategy=strategytype.identity)     @column(name="id")     private int id;      //date_performed datetime type in sql server     @column(name = "date_performed", nullable = false)     @temporal(temporaltype.timestamp)     private calendar dateperformed;      //setters , getters omitted simplicity }  class dao {      @persistencecontext(...)     private entitymanager entitymanager;      public void savenewmodel(model m) {         calendar c = m.getdateperformed();         system.out.println(c.get(calendar.hour_of_day));         //for example, suppose want save alaska time         c.settimezone(timezone.gettimezone("us/alaska"));         system.out.println(c.get(calendar.hour_of_day)); //<-- verification hour has gone 4 hours... yes has         entitymanager.persist(m);     } }

and problem is... in us/eastern time zone... 4 hours ahead of alaska time. when persist model saving eastern time (despite me changing time zone)... , if model gets saved between 12:00am , 4:00am, save incorrect day (because alaska time day before during hours) , things go bad program. best way around problem? how can save calendar object different timezone servers timezone? , either missing or accepted answer this question no longer case hibernate 4.x+


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