如何使用Java將字串解析為不同格式的日期？

import java.text.ParseException;
import java.text.SimpleDateFormat;

class StringToDateConversion {

    public static void main(String[] args) throws ParseException {
        // Define the input string in "dd/MM/yyyy" format
        String fromDate = "19/05/2009";

        // Create SimpleDateFormat objects for both input and output formats
        SimpleDateFormat fromUser = new SimpleDateFormat("dd/MM/yyyy");
        SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd");

        // Parse the input string into a Date object
        Date parsedDate = fromUser.parse(fromDate);

        // Reformat the Date object into the desired "yyyy-MM-dd" format
        String reformattedStr = myFormat.format(parsedDate);

        // Print the reformatted string
        System.out.println(reformattedStr);
    }
}