I know how to identify end of console in Pascal, C/C++, but in Java it's not working. Anybody knows?

What is the bug in my code?

import java.io.*;
public class ACM1601 {

    public static void main(String[] args) throws IOException{


        boolean isNewSntc = true;
        String line="";
        int ch;
        while ((ch = System.in.read()) != -1) {
            if (isNewSntc){
                line += Character.toString((char)ch);
                isNewSntc = false;
            }
            else {
                line += Character.toString(lowerCase((char)ch));
            }
            if (ch == 46 || ch == 63 || ch == 33)
                isNewSntc = true;
        }

        System.out.println(line);
    }

    public static char lowerCase(char in) {
        if ((int)in > 64 && (int)in < 91)
            return (char) ((int)in + 32);
        return in;
    }
}

Edited by author 31.12.2013 22:26

Edited by author 31.12.2013 22:26

Does this work?

import java.io.*;
class CopyFirst {
   public static void main(String[] args) throws IOException {
      int ch;
      while ((ch = System.in.read()) != -1)
         System.out.print((char)ch);
   }
}