Create an instance using Japan's time zone and set it with the local UTC : TimeZone « Development « Java Tutorial

1. Java Tutorial
2. Development
3. TimeZone

import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

public class Main {
  public static void main(String[] argv) throws Exception {
    Calendar local = Calendar.getInstance();
    Calendar japanCal = new GregorianCalendar(TimeZone.getTimeZone("Japan"));
    japanCal.setTimeInMillis(local.getTimeInMillis());
  }
}