jquery-tags | A tag-like input

The date value is coming as String, so you need to create a method for com.BillingSystem.domain.Bill.setDateOfChallan([Ljava.lang.String;)] .

_{There's interesting order of parentheses in the message}

The string value should be converted to Date using format by parsing the value which was coming from jQuery datepicker.

Similar to this answer where you can find a code example with using SimpleDateFormat for converting the value from action variable to Date.

You can change the underlying data-default that is your defaultText. You place this snippet when you want to remove the defaultText. Check the size of your array and if all values are removed you can call this but with the correct text

jsfiddle for inputTags