Can you give me the proper difference between java util Date vs java sql Date

Question

I have a doubt regarding java.util.Date vs java.sql.Date these two dates.

Can you explain me the proper difference between them?

Answer 1

1. As per Javadoc java.sql.Date is a thin wrapper around millisecond value which is used by JDBC to identify an SQL DATE type.

2. java.sql.Date just represent DATE without time information while java.util.Date represents both Date and Time information. This is the major difference why java.util.Date can not directly map to java.sql.Date.

3.  To suppress time information and to confirm with the definition of ANSI SQL DATE type, the millisecond values used in java.sql.Date instance must be "normalized by setting the hours, minutes, seconds and milliseconds to zero in the time-zone with DATE instance is associated. In other words, all time-related information is removed from java.sql.Date class.

Thank you, 

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Answer 2

The java.util.date class represents a particular moment in time, with millisecond precision since the 1st of January 1970 00:00:00 GMT (the epoch time). The class is used to keep coordinated universal time (UTC).

The java.sql.Date extends java.util.Date class.

Its main purpose is to represent SQL DATE, which keeps years, months and days. No time data is kept.

In fact, the date is stored as milliseconds since the 1st of January 1970 00:00:00 GMT and the time part is normalized, i.e. set to zero.

Basically, it’s a wrapper around java.util.Date that handles SQL specific requirements. java.sql.Date should be used only when dealing with databases.