Urgent help needed Please


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Thread: Urgent help needed Please

  1. #1
    Join Date
    Mar 2004
    Posts
    1

    Urgent help needed Please

    Hi all,

    Can someone please help me i am in a spot of bother, i need to get this little program going by monday morning and do not know how to do it, as everything i have tried hasn`t worked.

    This program is suposed to take a small text file and count the numbers of odd /even words as well as display the words. The program compiles but doesn`t run and gives me an error message that I don`t understand. I have attached the text file I am supposed to use to test the program.
    Could someone else please run it and see if they have any suggestions.....
    Thanks again folks



    import java.io.*;

    public class EvenOddCount {

    private static BufferedReader input;


    public void main (String [] args) {
    EvenOddCount count = new EvenOddCount();
    count.countWords(input);
    }

    private EvenOddCount() {
    input = openRead("C:\\TestFile.txt");
    }

    public BufferedReader openRead(String filename){
    try{
    BufferedReader input = new BufferedReader (new FileReader(filename));
    } catch (FileNotFoundException e) {System.exit(0);}
    return input;
    }

    public void countWords (BufferedReader input) {
    StreamTokenizer test = new StreamTokenizer(input);
    int evenCount = 0;
    int oddCount = 0;
    int charCount = 0;
    try {
    while (test.nextToken() != test.TT_EOF) {
    switch (test.ttype) {
    case StreamTokenizer.TT_WORD:
    charCount += test.sval.length();
    if (test.sval.length() % 2 == 0) {evenCount++;}
    else {oddCount++;}
    System.out.println(test.sval+ "[" + test.sval.length() + "]");
    break;
    }
    }
    } catch (IOException e) {System.exit(0);}
    int totalWords = evenCount + oddCount;
    System.out.println("There were " + totalWords + " words and " + charCount + " characters");
    System.out.println("There were " + evenCount + " even words, and " + oddCount + " odd words");
    }

    }
    Attached Files Attached Files

  2. #2
    Join Date
    Apr 2004
    Posts
    1

    Cool

    Hi,

    Try This.....


    import java.io.*;

    public class EvenOddCount {

    private static BufferedReader input;

    private EvenOddCount() {
    input = openRead("C:\\TestFile.txt");
    }

    public BufferedReader openRead(String filename){
    try{
    /*
    * Remove BufferReader
    *
    * BufferedReader input = new BufferedReader (new FileReader(filename));
    *
    */

    input = new BufferedReader (new FileReader(filename));

    } catch (FileNotFoundException e) {
    System.out.println("Exception Occured!!........");
    System.exit(0);
    }

    return input;
    }

    public void countWords (BufferedReader input) {

    StreamTokenizer test = new StreamTokenizer(input);
    int evenCount = 0;
    int oddCount = 0;
    int charCount = 0;
    try {
    while (test.nextToken() != test.TT_EOF) {

    switch (test.ttype) {
    case StreamTokenizer.TT_WORD:
    charCount += test.sval.length();
    if (test.sval.length() % 2 == 0) {evenCount++;}
    else {oddCount++;}
    System.out.println(test.sval+ "[" + test.sval.length() + "]");
    break;
    }
    }
    } catch (IOException e) {System.exit(0);}

    int totalWords = evenCount + oddCount;
    System.out.println("There were " + totalWords + " words and " + charCount + " characters");
    System.out.println("There were " + evenCount + " even words, and " + oddCount + " odd words");
    }

    public static void main (String [] args) {
    EvenOddCount count = new EvenOddCount();
    count.countWords(input);
    }

    }

  3. #3
    Join Date
    Apr 2004
    Location
    Hyderabad
    Posts
    1
    Hai friend,
    Here's your work done, Try stoping redeclaring the same variable which will lead you to null pointer exception.

    import java.io.*;

    public class EvenOddCount {

    private static BufferedReader input;

    private EvenOddCount() {
    input = openRead("C:\\testfile.txt");
    }

    public static void main (String [] args) {
    EvenOddCount count = new EvenOddCount();
    count.countWords(input);
    }


    public BufferedReader openRead(String filename){
    try{
    input = new BufferedReader (new FileReader(filename));
    } catch (FileNotFoundException e) {System.exit(0);}
    return input;
    }

    public void countWords (BufferedReader input) {
    StreamTokenizer test = new StreamTokenizer(input);
    int evenCount = 0;
    int oddCount = 0;
    int charCount = 0;
    try {
    while (test.nextToken() != test.TT_EOF) {
    switch (test.ttype) {
    case StreamTokenizer.TT_WORD:
    charCount += test.sval.length();
    if (test.sval.length() % 2 == 0) {evenCount++;}
    else {oddCount++;}
    System.out.println(test.sval+ "[" + test.sval.length() + "]");
    break;
    }
    }
    } catch (IOException e) {System.exit(0);}
    int totalWords = evenCount + oddCount;
    System.out.println("There were " + totalWords + " words and " + charCount + " characters");
    System.out.println("There were " + evenCount + " even words, and " + oddCount + " odd words");
    }

    }
    Friend of All
    - Shiva

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