new one but still WA9
package banky;
import java.util.*;
public class test1 {

    private static Scanner scan;

    public static void main(String [] args){

        scan = new Scanner(System.in);
        int k=0;
        int r=0;
        int pr=0;
        while (scan.hasNext()){
            String s = scan.nextLine();
            //s  = s.toUpperCase();
            s  = s.toLowerCase();
            char c [] = s.toCharArray();
            if (k<=0||r>0)
                c[0] -= 32;
            int i ;
            for(i=1;i<s.length();i++){
                if  ((c[i] == 46) || (c[i] == 33) || (c[i] == 63))
                    {pr= 1;
                    c[i]=c[i];}
                else if  (pr==1&&c[i]!=32)
                { c[i] -= 'a' - 'A';
                pr = 0;}}
            for(i=0;i<s.length();i++){
                if  ((c[i] == 0)|| (c[i] == 14) || (c[i] == 1) || (c[i] == 31))
                    c[i] += 'a' - 'A';}
            for(i=1;i<s.length();i++){
                if  (((c[i-1]< 'a')&&(c[i-1]>='A'))&&((c[i]< 'a')&&(c[i]>='A')))
                      {c[i] += 'a' - 'A';}}

            if  ((c[s.length()-1] == 46) || (c[s.length()-1] == 33) || (c[s.length()-1] == 63))
            {r=r+1;}
            else
            {r=0;}
            //System.out.println(k);
            //System.out.println(r);
            System.out.println(c);
            k=k+1;


        }
    }
}

Edited by author 30.04.2016 13:09

You are checking the only prev char for end of sentence. Why?
Try "HERE!!!      IS!!!!!     TEST!!!!"

P.S. Why "c[i]==32" better then "c[i]==' '"?

Дякую, за тест. І що мені робити? :(

Edited by author 29.04.2016 11:37

Implement state machine, ~2 states:
1) "at sentence begin", if char is alpha then it uppercased, state switched to "inside sentence"
2) "inside sentence", if char is alpha it lowercased; if char is ".?!" state switched to "at sentence begin".

Thank you for help. But I am only beginer in java so i cant jet deal with this state machine