simpledateformat - Java: Date Time Conversion -

i have date format "sa25may"; need convert date time variable , want add 1 day in that. , need return answer in same format. please needful

try {   string str_date = "sa25may";   dateformat formatter;   date date;   formatter = new simpledateformat("ddd-dd-mmm");   date = (date) formatter.parse(str_date);   system.out.println("today " + date); } catch (exception e) {   e.printstacktrace(); } 

error:

  java.text.parseexception: unparseable date: "sa25may" @ java.text.dateformat.parse(dateformat.java:337) @ javadatatable.javadatatable.main(javadatatable.java:29) 

here don't know how resolve problem.

you can add 1 day if know year because of leap years (29th of february).

in case year current year, following solution should the job:

for "sa25may":

try {     string str_date = "sa25may";      // remove sa     str_date = str_date.replacefirst("..", "");      // add current year     calendar c = calendar.getinstance();     str_date = c.get(calendar.year) + str_date;      // parse date     date date;     simpledateformat formatter = new simpledateformat("yyyyddmmm");     date = formatter.parse(str_date);     system.out.println("today " + date);      // add day     c.settime(date);     c.add(calendar.date, 1);      // rebuild old pattern new date     simpledateformat formatter2 = new simpledateformat("eeeddmmm");     string tomorrow = formatter2.format(c.gettime());     tomorrow = tomorrow.touppercase();     tomorrow = tomorrow.substring(0, 2) + tomorrow.substring(3);     system.out.println("tomorrow " + tomorrow); } catch (exception e) {     e.printstacktrace(); } 

or "sa-25-may":

try {     string str_date = "sa-25-may";      // remove sa     str_date = str_date.replacefirst("..-", "");      // add current year     calendar c = calendar.getinstance();     str_date = c.get(calendar.year) + "-" + str_date;      // parse date     date date;     simpledateformat formatter = new simpledateformat("yyyy-dd-mmm");     date = formatter.parse(str_date);     system.out.println("today " + date);      // add day     c.settime(date);     c.add(calendar.date, 1);      // rebuild old pattern new date     simpledateformat formatter2 = new simpledateformat("eee-dd-mmm");     string tomorrow = formatter2.format(c.gettime());     tomorrow = tomorrow.touppercase();     tomorrow = tomorrow.substring(0, 2) + tomorrow.substring(3);     system.out.println("tomorrow " + tomorrow); } catch (exception e) {     e.printstacktrace(); }