How to convert java.util.Date to java.sql.Date?

Question

I am trying to use a java.util.Date as input and then creating a query with it - so I need a java.sql.Date.

I was surprised to find that it couldn\'t do the conver

Answer 1

I think the best way to convert is:

static java.sql.Timestamp SQLDateTime(Long utilDate) {
    return new java.sql.Timestamp(utilDate);
}

Date date = new Date();
java.sql.Timestamp dt = SQLDateTime(date.getTime());

If you want to insert the dt variable into an SQL table you can do:

insert into table (expireAt) values ('"+dt+"');

Answer 2

Format your java.util.Date first. Then use the formatted date to get the date in java.sql.Date

java.util.Date utilDate = "Your date"
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
final String stringDate= dateFormat.format(utilDate);
final java.sql.Date sqlDate=  java.sql.Date.valueOf(stringDate);

Answer 3

If you are usgin Mysql a date column can be passed a String representation of this date

so i using the DateFormatter Class to format it and then set it as a String in the sql statement or prepared statement

here is the code illustration:

private String converUtilDateToSqlDate(java.util.Date utilDate) {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    String sqlDate = sdf.format(utilDate);
    return sqlDate;
}

String date = converUtilDateToSqlDate(otherTransaction.getTransDate());

//then pass this date in you sql statement

Answer 4

Here the example of converting Util Date to Sql date and ya this is one example what i am using in my project might be helpful to you too.

java.util.Date utilStartDate = table_Login.getDob();(orwhat ever date your give form obj)
java.sql.Date sqlStartDate = new java.sql.Date(utilStartDate.getTime());(converting date)

Answer 5

java.sql.Date sqlDate = new java.sql.Date(javaDate.getTime());

Here javaDate is the instance of java.util.Date

Answer 6

Method for comparing 2 dates (util.date or sql.date)

 public static boolean isSameDay(Date a, Date b) {
    Calendar calA = new GregorianCalendar();
    calA.setTime(a);

    Calendar calB = new GregorianCalendar();
    calB.setTime(b);

    final int yearA = calA.get(Calendar.YEAR);
    final int monthA = calA.get(Calendar.MONTH);
    final int dayA = calA.get(Calendar.DAY_OF_YEAR);

    final int yearB = calB.get(Calendar.YEAR);
    final int monthB = calB.get(Calendar.MONTH);
    final int dayB = calB.get(Calendar.DAY_OF_YEAR);

    return yearA == yearB && monthA == monthB && dayA == dayB;
}