Are two calendar objects represent the same local time.

 
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Calendar;
import java.util.Date;
public class Main {
  public static boolean isSameLocalTime(Calendar cal1, Calendar cal2) {
      if (cal1 == null || cal2 == null) {
          throw new IllegalArgumentException("The date must not be null");
      }
      return (cal1.get(Calendar.MILLISECOND) == cal2.get(Calendar.MILLISECOND) &&
              cal1.get(Calendar.SECOND) == cal2.get(Calendar.SECOND) &&
              cal1.get(Calendar.MINUTE) == cal2.get(Calendar.MINUTE) &&
              cal1.get(Calendar.HOUR) == cal2.get(Calendar.HOUR) &&
              cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR) &&
              cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
              cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
              cal1.getClass() == cal2.getClass());
  }
}