How to get date from html form to servlet

Question

I have an HTML form where I have a date and a time picker. What I am trying to do is get the date and time by request.getParameter in servlet, then insert it into my database. How can I get that date and time in date and time format or get them as a string then parse them.

Code:

String[] quantity = request.getParameterValues("Quantity_field");
     java.util.Date selectedDate = new SimpleDateFormat("yyyy-MM-dd").parse(request.getParameter("deliveryDate")); //using this one i am trying to get date but it is showing error
    java.util.Date selectedTime = new SimpleDateFormat("hh:mm:ss").parse(request.getParameter("deliveryTime")); 
    System.out.println(selectedDate);
    java.util.Date dateUtil = new Date();
    java.sql.Date dateSql = new java.sql.Date(dateUtil.getTime());
    java.sql.Timestamp timestamp = new Timestamp(dateUtil.getTime());


    try {
        con = DBConnection.createConnection();
        statement = con.createStatement();
        String query = " insert query  VALUES   (?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
        PreparedStatement ps = con.prepareStatement(query);
        for (int i = 0; i < quantity.length; i++) {
            if (Double.parseDouble(quantity[i]) != 0) {
                if(recorderNo!=0)
                {
                    ps.setInt(1, recorderNo);
                }
                else
                {
                    ps.setInt(1, 1);
                }

                ps.setDate(2, dateSql);
                ps.setString(3, 77);
                ps.setDouble(4, 55);
                ps.setInt(5, 0);
                ps.setInt(6, 0);
                ps.setDouble(7, Double.parseDouble(quantity[i]));
                ps.setInt(8, 0);
                ps.setInt(9, 0);
                ps.setInt(10, 0);
                ps.setString(11, outlet);
                ps.setTimestamp(12, timestamp);
                 ps.setDate(13,selectedDate); // here i am trying to put date
                ps.setTime(14,selectedTime);// and here time
                ps.addBatch();
            }
        }
        ps.executeBatch();

I found this on Google to get date and time but its throwing error at:

ps.setDate(13,selectedDate);
ps.setTime(14,selectedTime);

The error is:

The method setDate(int, java.sql.Date) in the type PreparedStatement is not applicable for the arguments (int, java.util.Date)

Edit

i am doing like this

java.util.Date selectedDate = new SimpleDateFormat("yyyy-MM-dd").parse(request.getParameter("deliveryDate")); 
    java.util.Date selectedTime = new SimpleDateFormat("hh:mm:ss").parse(request.getParameter("deliveryTime"));
    java.sql.Date dateSelected = new java.sql.Date(selectedDate.getTime());     
    java.sql.Time dateTime=new Time(selectedTime.getTime());

but the above lines are throwing error, i think i am missing something or writing something wrong

Answer 1

You have two different Date objects (util.Date and sql.Date), so you need to convert from util.Date to sql.Date to use setDate method.

Explanation in this post

Answer 2

Your java.util.Date selectedDate is of java.util.Date type while PreparedStatement's setDate(int, java.sql.Date) method requires a java.sql.Date type. So convert your java.util.Date into java.sql.Date

You can add this lines:

java.util.Date selectedDate = new SimpleDateFormat("yyyy-MM-dd").parse(request.getParameter("deliveryDate")); 
java.util.Date selectedTime = new SimpleDateFormat("hh:mm:ss").parse(request.getParameter("deliveryTime")); 
// Add the lines below
java.sql.Date selectedSQLDate =  new java.sql.Date(selectedDate.getTime());
java.sql.Time selectedSQLTime =  new java.sql.Time(selectedTime.getTime());

So your code will be:

        // Other codes
 try { 
        String[] quantity = request.getParameterValues("Quantity_field");
        java.util.Date selectedDate = new SimpleDateFormat("yyyy-MM-dd").parse(request.getParameter("deliveryDate")); 
        java.util.Date selectedTime = new SimpleDateFormat("hh:mm:ss").parse(request.getParameter("deliveryTime")); 
        // Add the lines below
        java.sql.Date selectedSQLDate =  new java.sql.Date(selectedDate.getTime());
        java.sql.Time selectedSQLTime =  new java.sql.Time(selectedTime.getTime());
        con = DBConnection.createConnection();
        statement = con.createStatement();
        String query = " insert query  VALUES   (?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
        PreparedStatement ps = con.prepareStatement(query);
        for (int i = 0; i < quantity.length; i++) {
            if (Double.parseDouble(quantity[i]) != 0) {
                if(recorderNo!=0)
                {
                    ps.setInt(1, recorderNo);
                }
                else
                {
                    ps.setInt(1, 1);
                }

                ps.setDate(2, dateSql);
                ps.setString(3, 77);
                ps.setDouble(4, 55);
                ps.setInt(5, 0);
                ps.setInt(6, 0);
                ps.setDouble(7, Double.parseDouble(quantity[i]));
                ps.setInt(8, 0);
                ps.setInt(9, 0);
                ps.setInt(10, 0);
                ps.setString(11, outlet);
                ps.setTimestamp(12, timestamp);
                ps.setDate(13,selectedDate); // here i am trying to put date
                ps.setTime(14,selectedTime);// and here time
                ps.addBatch();
            }
        }
        ps.executeBatch();
        // Other codes

} catch (Exception e){
       // TODO Auto-generated catch block 
}

But I suggest you use java.time classes instead of legacy java.util.Date & java.sql.Date with JDBC 4.2 or later. Refer to this for details.