You need to read the SimpleDateFormat API as it's all well explained there.
Note this explanation from the API:
- Text: For formatting, if the number of pattern letters is 4 or more, the full form is used; otherwise a short or abbreviated form is used if available. For parsing, both forms are accepted, independent of the number of pattern letters.
- Number: For formatting, the number of pattern letters is the minimum number of digits, and shorter numbers are zero-padded to this amount. For parsing, the number of pattern letters is ignored unless it's needed to separate two adjacent fields.
So for instance, MM corresponds to a numeric month, not the month name. For the complete month name, I'd use MMMM, and for the complete week name, I'd use EEEE. I'd use dd for a two digit date such as 01.
e.g.,
SimpleDateFormat sdf = new SimpleDateFormat("EEEE, MMMM dd, yyyy");