Почему ошибка?
package com.javarush.task.task04.task0420;
/*
Сортировка трех чисел
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String c = reader.readLine();
int cc = Integer.parseInt(c);
String a = reader.readLine();
String b = reader.readLine();
int bb = Integer.parseInt(b);
int aa = Integer.parseInt(a);
if (aa<bb&&aa<cc&&bb<cc)
System.out.println(cc+" "+bb+" "+aa);
if (aa<bb&&aa<cc&&bb>cc)
System.out.println(bb+" "+cc+" "+aa);
if (bb<aa&&bb<cc&&aa<cc)
System.out.println(cc+" "+aa+" "+bb);
if (bb<aa&&bb<cc&&aa>cc)
System.out.println(aa+" "+cc+" "+bb);
if (cc<aa&&cc<bb&&aa<bb)
System.out.println(bb+" "+aa+" "+cc);
if (cc<aa&&cc<bb&&aa>bb)
System.out.println(aa+" "+bb+" "+cc);
//напишите тут ваш код
}
}