Java date concept

Question

I have util dates like 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23

I want to store that dates into mysql database table column date

am using these code

String datevalue=request.getParameter("date");

this datevalue is printing like this 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23 .

 String[] datetokens=datevalue.split(",");
java.sql.Date dt = java.sql.Date.valueOf(new String(datevalue));

In inserting time am getting these error

java.lang.IllegalArgumentException

give me suggetion howto solve that problem and stored in database

Answer 1

You want to use a date format object to parse the dates such as SimpleDateFormat

String dateValuesString = request.getParameter("date");
String[] dateValueStrings = dateValuesString.split(",");
SimpleDateFormat sdf = new SimpleDateFormat("yy-MM-dd");
for (String dateString : dateValueStrings) {
    Date date = sdf.parse(dateString); 
}

Answer 2

The following code will print each date.

String datevalue = "2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23, 2013-10-23";
        String[] datetokens = datevalue.split(", ");
        for (String each : datetokens) {
            java.sql.Date dt = java.sql.Date.valueOf(each);
            System.out.println(dt);
        }

You can insert dt to the database. There must be a space after comma (,) in split method (like split(", ") ).

Answer 3

You should use STR_TO_DATE function. Try typeCasting at the time of INSERT like this:

INSERT INTO MY_TABLE VALUE (STR_TO_DATE('5/15/2012 8:06:26 AM', '%c/%e/%Y %r'))

Answer 4

I would actually use JODA to do what you need there; however, SimpleDateFormat or JODA will do the trick.

Answer 5

java.lang.IllegalArgumentException is due to wrong format of datetokens . It get blank space because of split("," ). Use trim() method

for(String token: datetokens){
java.sql.Date dt = java.sql.Date.valueOf(new String(token.trim()));
}

Answer 6

Try like this as well:-

String dateValuesString = request.getParameter("date");
String[] dateValueStrings = dateValuesString.split(",");
SimpleDateFormat myFormat = new SimpleDateFormat("yy-MM-dd");
for (String dateString : dateValueStrings) {
String reformattedStr = myFormat.format(dateString);
 System.out.println(reformattedStr);
}

Answer 7

In this case:

• You passed a comma (,) seperated list of date values.
  String datevalue=request.getParameter("date");

• splited all the dates into an array of strings holding each date value.
  String[] datetokens = datevalue.split(",");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", dateValue);
  ...specify the date format to be parsed.

• now you need to iterate (for loop) to access each of strings in the array.
  for(String dateValue : datetokens){
Date date = sdf.parse(dateValue.trim());
java.sql.Date sqlDate = new java.sql.Date(date.getTime());
  // here INSERT the sqlDate value into MySQL for each iteration.
  }

• Please don't forget to manage database connection and provide proper query while inserting.

• Also, handle the ParseException ie. either use try/catch or throws.