//for I/O
package untitled4;
import java.io.*;
import java.util.*;
import javax.swing.JOptionPane;

public class labsix
{
    public static void main(String[] args) throws IOException
    {
        String Str,temp,SingleWord,newLine;
        //for input
        BufferedReader b;
        //for output
        PrintWriter w;

        //indicator for uppercase letter
        boolean Uppercase=false;

        try{
          System.out.println("Please enter input file name");
          Str=SavitchIn.readLine();
          b = new BufferedReader(new FileReader(Str));

          System.out.println("Please enter  output filename");
          Str=SavitchIn.readLine();
          w = new PrintWriter(new FileOutputStream(Str));

          //get each line in the input file
          //temp=b.readLine();
          while((temp=b.readLine())!=null)

            {
            //get all words using StringTokenizer in temp
            StringTokenizer sT;
            sT=new StringTokenizer(temp);

            newLine=" ";

            while (sT.hasMoreTokens())
            {   // true while there are more words in sentence
              SingleWord = sT.nextToken().trim();  // gets the next word

              //construct the new line 	
              if(Uppercase==true)
                {
                //change first letter to uppercase
                SingleWord=(SingleWord.charAt(0)+"").toUpperCase()+SingleWord.substring(1);
                Uppercase=false;
                }

                newLine+=SingleWord+" ";

              //check for '.','!','?'			
              if(SingleWord.charAt(SingleWord.length()-1)=='.' ||
                 SingleWord.charAt(SingleWord.length()-1)=='!' ||
                 SingleWord.charAt(SingleWord.length()-1)=='?')
                 Uppercase=true;
            }

            w.println(newLine.trim());
          }
          b.close();
          w.close();
        }
        catch(FileNotFoundException e)
        {
          System.out.println("File opening problem");
        }
        catch(IOException e)
        {
          System.out.println("IO Exception!");
        }
    }
}