Java SimpleDateFormat

Question

I have two 2 JTables.

Table_1 contains dates that are formatted to ( EE - MMMMM dd, yyyy )

Table_2's values depends on what the user clicked on Table_1. Normally, the date format comming from the database is ( yyyy-dd-MM ) I formatted it to ( EE - MMMMM dd, yyyy ) to look a little bit good.

My problem is that, I want to format it back to ( yyyy-dd-MM ) for the query to work.

I want this:

Table_1.getValueAt(Table_1.getSelectedRow(),0) - > Thu - Feb 5, 2015

Back to this:

2015-5-2 

And then query it to the database to bring results.

Answer 1

using SimpleDateFormatter and Calendar ,

String date = "Thu-Feb 5, 2015";

SimpleDateFormat sdf = new SimpleDateFormat("EEE-MMM d, yyyy");

Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(date));

String newDate = cal.get(Calendar.YEAR) + "-" + cal.get(Calendar.DAY_OF_MONTH) + "-" + cal.get(Calendar.MONTH);

System.out.println(date);
System.out.println(newDate);

output ,

Thu-Feb 5, 2015
2015-5-1

observe that February equals to 1 in above output, this is because a month starts from 0 .