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Thread: simple code help required

  1. #1
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    Default simple code help required

    import java.io.*;
    import java.util.Scanner;
    import java.util.Vector;
     
    public class test3 {
     
        public static void main(String[] args) throws IOException {     
            int counter = 0; 
            String line = null;
     
             // Location of file to read
            File file = new File("test.txt");
     
            try {
     
                Scanner scanner = new Scanner(file);
     
                while (scanner.hasNextLine()) {
                    line = scanner.nextLine();
                    System.out.println(line);
                    //counter++;                    
                }
                scanner.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }           
            //System.out.println(counter);        
        }
    }

    characters from file into an array...


    assuming there are 4 arrays

    array 0
    array 1
    array 2
    array 3

    and string is THISISASTRING or THIS IS A STRING

    array 0 TITG
    array 1 HSR
    array 2 IAI
    array 3 SSN

    values to be input in such an order..

    am unable to store the file string into a string currently for now.


  2. #2
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    Default Re: simple code help required

    Quote Originally Posted by rzzz View Post
    am trying to get the application open file and copy details from it but it kind of doesnt work...
    The exception handling can be better, and the copy can be optimized (reading 1 char at time is a bad approach) but .... despite this, it *works*. The result is what the code says, a new file with a copy of all characters.

    So, what's wrong?
    Andrea, www.andbin.net SCJP 5 (91%) SCWCD 5 (94%)

    Useful links for Java beginners My new project Java Examples on Google Code

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    Default Re: simple code help required

    but it kind of doesnt work
    Please, do everyone a favor and don't post vague, ambiguous, essentially worthless descriptions for help like this. Describe EXACTLY what is wrong with the code you've posted, provide a sample run with inputs/outputs, if possible. Post error messages, if any. Be specific, ask specific questions, communicate as clearly as you can.

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    Default Re: simple code help required

    hi rzzz : i think you means you cant put character to array; pls see followed

    Code removed.
    Last edited by GregBrannon; January 12th, 2014 at 07:10 AM. Reason: Do not provide solutions. Suggestions are sufficient.

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    Default Re: simple code help required

    @Billzhang:

    Please do not provide solutions. Also, review this link to learn how to post code correctly along with other useful info for newcomers.

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    Default Re: simple code help required

    assuming there are 4 arrays

    array 0
    array 1
    array 2
    array 3

    and string is THISISASTRING

    array 0 TITG
    array 1 HSR
    array 2 IAI
    array 3 SSN

    values to be input in such an order..

    am unable to store the file string into a string currently for now.

  7. #7
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    Default Re: simple code help required

    And why do (you think) you need to do that? What's the objective? What's the program supposed to do? How will those arrays accomplish the program's objective? There is almost always a preferred alternative to using parallel arrays to store/manipulate related data.

    What you've shown is the beginning of a very big and unnecessary headache. If you answer the questions above, we should be able to suggest better approaches.

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    Default Re: simple code help required

    Hi Greg

    The initial objective is to transposite arrays.

    array 0 TITG
    array 1 HSR
    array 2 IAI
    array 3 SSN

    whereby arrays can be shuffled in any sequence,. subsequently the sequence has to be reversed to get back the initial string

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