如何将字符串格式的日期插入Web表单

Question

I want to insert a date as a string like 23/8/1956 on a Web form. It should have the format: aug 23 1956 and the day , month, year is in a separate field.

I used the following function:

 public void dateInString() throws ParseException 
 {
     SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
     SimpleDateFormat parser = new SimpleDateFormat("dd/MMM/yyyy");
     String dateString = "31-10-2013";
      try {
        Date date = formatter.parse(dateInString);
        System.out.println(parser.format(date));
     } 
      catch (ParseException e) {
      e.printStackTrace();
     } 
 }

I received an error on the line : Date date = formatter.parse(dateInString); It tells me that this is not a variable - why? And after this function - how I can insert this to the Web ?

Answer 1

You have 2 problems

1. As Lonely Neuron has already pointed out: your variable is called NameString , not NameInString
2. You need to get MMM dd YYYY(aug 23 1956) format as output

So change SimpleDateFormat parser = new SimpleDateFormat("dd/MMM/yyyy"); to SimpleDateFormat parser = new SimpleDateFormat("MMM dd yyyy");

working code:

public void  dateInString()  
{
    SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
    SimpleDateFormat parser = new SimpleDateFormat("MMM dd yyyy");
    String dateString = "31-10-2013";
    try {
        Date date = formatter.parse(dateString);
        System.out.println(parser.format(date));
    } 
    catch (ParseException e) {
        e.printStackTrace();
    } 
}

output: Oct 31 2013

Answer 2

With dateInString you are referencing a variable which doesn't exist. Change your declaration to:

String dateInString = "31-10-2013";

I would also suggest using a professional IDE like the (free) community version of intelliJ or eclipse . That way you should be able to catch such errors easily for yourself

Answer 3

Check this following code. I think it will get you desired output.

  public void dateInString() throws ParseException
  {
     SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
     SimpleDateFormat parser = new SimpleDateFormat("dd/MMM/yyyy");
     String dateString = "31-10-2013";
     try {
        Date date = formatter.parse(dateString);
        System.out.println(parser.format(date));
     } 
     catch (ParseException e) {
        e.printStackTrace();
     }
  }