How to convert Calendar to java.sql.Date in Java?
JavaSqlCalendarJava Problem Overview
Calendar cal;
String sql = "INSERT INTO ttable (dt) values (?);"
//dt is a dateTime field in ttable
PreparedStatement stmt = connection.prepareStatement(sql);
stmt = setDate(1,cal); //not working
stmt.execute();
stmt.close();
I would like to convert cal to a Date type to insert into table.
Java Solutions
Solution 1 - Java
There is a getTime() method (unsure why it's not called getDate).
Edit: Just realized you need a java.sql.Date. One of the answers which use cal.getTimeInMillis() is what you need.
Solution 2 - Java
Did you try cal.getTime()? This gets the date representation.
You might also want to look at the javadoc.
Solution 3 - Java
Use stmt.setDate(1, new java.sql.Date(cal.getTimeInMillis()))
Solution 4 - Java
Converting is easy, setting date and time is a little tricky. Here's an example:
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 2000);
cal.set(Calendar.MONTH, 0);
cal.set(Calendar.DAY_OF_MONTH, 1);
cal.set(Calendar.HOUR_OF_DAY, 1);
cal.set(Calendar.MINUTE, 1);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
stmt.setDate(1, new java.sql.Date(cal.getTimeInMillis()));
Solution 5 - Java
Here is a simple way to convert Calendar values into Date instances.
Calendar C = new GregorianCalendar(1993,9,21);
Date DD = C.getTime();
System.out.println(DD);
Solution 6 - Java
stmt.setDate(1, new java.sql.Date(cal.getTime().getTime()));
Solution 7 - Java
Calendar cal = Calendar.getInstance(); //This to obtain today's date in our Calendar var.
java.sql.Date date = new Date (cal.getTimeInMillis());
Solution 8 - Java
I found this code works:
SimpleDateFormat sdf = new SimpleDateFormat("yyyy MMM dd HH:mm:ss");
Calendar calendar = new GregorianCalendar(2013,0,31);
System.out.println(sdf.format(calendar.getTime()));
you can find the rest in this tutorial:
http://www.mkyong.com/java/java-date-and-calendar-examples/