how to format ddmmmyyyy to ddmmyy in java

To format a date from the "ddmmmyyyy" format to the "ddmmyy" format in Java, you can use the DateTimeFormatter class from the java.time package.

Here's an example of how to format a date from the "ddmmmyyyy" format to the "ddmmyy" format in Java:

// Parse the input date string using the "ddMMMyyyy" format
DateTimeFormatter inputFormatter = DateTimeFormatter.ofPattern("ddMMMyyyy");
LocalDate date = LocalDate.parse("22Dec2021", inputFormatter);

// Create a DateTimeFormatter object with the desired output format
DateTimeFormatter outputFormatter = DateTimeFormatter.ofPattern("ddMMyy");

// Use the format() method of the DateTimeFormatter to format the LocalDate object
String formattedDate = date.format(outputFormatter);

System.out.println("The formatted date is " + formattedDate);

In the above example, the input date string is first parsed using the parse() method of the LocalDate class and the "ddMMMyyyy" format. The resulting LocalDate object is then stored in a variable called date.

Next, a DateTimeFormatter object is created with the desired output format, using the ofPattern() method and a format string. The format string specifies that the day should be shown with 2 digits, the month with 2 digits, and the year with 2 digits.

The format() method of the DateTimeFormatter is then used to format the LocalDate object and store the result in a String variable called formattedDate. Finally, the formatted date is printed to the console.

The output of this example will be "The formatted date is 22Dec21".

Note that the java.time package was introduced in Java 8 and replaces the older java.util.Date and java.text.SimpleDateFormat classes. If you are using an older version of Java, you can use the SimpleDateFormat class to format a Date object in a similar way.