Read txt file 1 char @ time cnvrt to uppercase problem

Question

I am trying to get the following 2 problems solved. My input file is below and my output is below along with the code.
Can anyone fix this and explain what I am doing wrong? Thank You in advance!
(1) Any string of two or more blanks symbols is replaced by a single blanks.
(2) All sentences start with an upper case letter.
Input A://DataIn.txt = How me? you good.
Output A://DataOut.txt = H o w m e Y U G O . ��
import java.io.*;
public class NumberFormat
private DataInputStream inputStream = null;
private DataOutputStream outputStream = null;
*(1) Any string of two or more blanks symbols is replaced by a single blanks.
(2) All sentences start with an upper case letter.
public static void main(String[] args) throws java.io.IOException
NumberFormat twoTimer = new NumberFormat();
twoTimer.connectToInputFile();
twoTimer.connectToOutputFile();
twoTimer.readInput();
twoTimer.closeFiles();
System.out.println("Check A:/DataOut.txt Now");
public void connectToInputFile()
String inputFileName = getFileName("Enter input file name: A://DataIn.txt");
try
inputStream =
new DataInputStream(
new FileInputStream(inputFileName));
catch(FileNotFoundException e)
System.out.println("File " + inputFileName
+ " not found.");
System.exit(0);
public void connectToOutputFile()
String outputFileName = getFileName("Enter output file name: A://DataOut.txt");
try
outputStream = new DataOutputStream(
new FileOutputStream(outputFileName));
catch(FileNotFoundException e)
System.out.println("Error opening output file "
+ outputFileName);
System.out.println(e.getMessage());
System.exit(0);
private String getFileName(String prompt)
String fileName = null;
System.out.println(prompt);
fileName = SavitchIn.readLineWord();
return fileName;
//===========================================================================
public void readInput()
char prevChar = ' ';
try
char nextChar;
String result = "";
boolean done1 = false;
boolean done2 = false;
char next;
do
next = (char) (inputStream.read()); // <== Read input 1 Character @ time
if (next == '\n')
done1 = true;
if (next == ' ' && next == prevChar)
prevChar = next;
else
if (next == '.' || next == '!' || next == '?')// <== Capitalize next input Character
do
next = ' ';
outputStream.writeChar(next);
next = (char) (inputStream.read());
if (next == '\n')
done2 = true;
next = (char) (inputStream.read());
// next = (char) (inputStream.readNonwhiteChar()); ?????????????
if (next == '\n')// <== never gets to end of file
done2 = true;
outputStream.writeChar(Character.toUpperCase (next));
prevChar = next;
while (!done2);
else
outputStream.writeChar(next);
prevChar = next;
while (!done1);
catch(EOFException e)
//Do nothing. This just ends the loop.
System.out.println("Do Nothing Here");
catch(IOException e)
System.out.println(
"Error: reading or writing files.");
System.out.println(e.getMessage());
System.exit(0);
public void closeFiles()
try
inputStream.close();
outputStream.close();
catch(IOException e)
System.out.println("Error closing files "
+ e.getMessage());
System.exit(0);

Answer 1

This line looks fishy:
if (next == ' ' && next == prevChar)
prevChar = next;Try:
if (next == ' ' && next == prevChar)
next = "";That should take care of the extra blanks, though I didn't test it myself, and could very well be wrong.
Not sure about the uppercase, though I imagine it must be reading the ToUpperCase every time after the first period.