I cant find any error, output is fine :(
package pl.codegym.task.task09.task0922;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.Scanner;
/*
Jaka dzisiaj jest data?
*/
public class Solution {
public static void main(String[] args) throws Exception {
Scanner scanner = new Scanner(System.in);
String stringInput = scanner.nextLine();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date d = sdf.parse(stringInput);
sdf.applyPattern("dd-MM-yyyy");
String stringOutput = sdf.format(d);
System.out.println(stringOutput);
}
}