Как преобразовать строку даты в формат yyyy/mm/dd в java?

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import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
    public static void main(String[] args) {
        String dateString = "2021/12/31";
        SimpleDateFormat originalFormat = new SimpleDateFormat("yyyy/MM/dd");
        SimpleDateFormat targetFormat = new SimpleDateFormat("yyyy/MM/dd");
        
        try {
            Date date = originalFormat.parse(dateString);
            String formattedDate = targetFormat.format(date);
            System.out.println(formattedDate);
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }
}

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import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class Main {
    public static void main(String[] args) {
        String dateString = "2021/12/31";
        
        DateTimeFormatter originalFormat = DateTimeFormatter.ofPattern("yyyy/MM/dd");
        DateTimeFormatter targetFormat = DateTimeFormatter.ofPattern("yyyy/MM/dd");
        
        LocalDate date = LocalDate.parse(dateString, originalFormat);
        String formattedDate = date.format(targetFormat);
        
        System.out.println(formattedDate);
    }
}