Write an app. that asks the user for the name of a .txt file and then tells them

Question

Write an app. that asks the user for the name of a .txt file and then tells them how many words the file contains, how many characters it contains, and also how many words it contains that begin with a capital letter. You should create your sample .txt file using a simple text editor such as Windows Notepad (find it under Start, All Programs, Accessories). Hint: use a String Tokenizer in this app. A sample .txt file to use as input might contain something like: one two three forty-six Dogs, Cats, Bats Please do not user bufferread, try, catch, or break statement.

USE these to write a text file: for example

PrintWriter outputFile = new PrintWriter("StudentData.txt");

PrintWriter outputFile = new PrintWriter("Names.txt");

outputFile.println("Chris");

outputFile.println("Kathryn");

outputFile.println("Jean");

outputFile.close();

•FileWriter fw =
     new FileWriter("names.txt", true);

PrintWriter pw = new PrintWriter(fw);

PrintWriter outFile =

     new PrintWriter("F:\PriceList.txt");

PrintWriter outFile = new

PrintWriter("C:\Users\kmihavic\Documents\NetBeansProjects\FileWriteDemo ames.txt");

File myFile = new File("Customers.txt");

Scanner inputFile = new Scanner(myFile);

Scanner keyboard = new Scanner(System.in);

System.out.print("Enter the filename: ");

String filename = keyboard.nextLine(); //user can type vs. \

File file = new File(filename);

Scanner inputFile = new Scanner(file);

String str = inputFile.nextLine();

File file = new File(filename);

Scanner inputFile = new Scanner(file);

// Read until the end of the file.

while (inputFile.hasNext()) //returns false at eof

{

   String str = inputFile.nextLine();

   System.out.println(str);

}

inputFile.close();// close the file when done.

Explanation / Answer

int countWords, countCharacters, countCapitals;
StringTokenizer st, stc;
while (inputFile.hasNext()) //returns false at eof
{
String str = inputFile.nextLine();
countCharacters += str.length();

st = new StringTokenizer(str);
while(st.hasMoreTokens()) {
    countWords++;
    String word = st.nextToken();
   char ch = word.charAt(0);
   if (Character.toLowerCase(ch)!=ch)
       countCapitals++;
}
System.out.println(str);
}

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.