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POReading certain sentences from datafile.txt in java
 

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  1. POReading certain sentences from datafile.txt in java
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    <p>In my program, it reads a file called datafile.txt... inside the datafile.txt is a random 3 lines of words. What my program does is reads the file the user types in and then they can type in a Line # and Word # and it will tell them the word that is in that location.. for example..</p> <p>What is the file to read from?</p> <p>datafile.txt</p> <p>Please enter the line number and word number (the first line is 1).</p> <p>2 2</p> <p>The word is: the</p> <p>My problem is that my program reads the 3 lines in the txt doc as 0, 1 ,2 and the words start from 0. So to read the first word in the first line they would have to type 0,0 instead of 1,1. What I am trying to do is make it work so they can type 1,1 instead of 0,0. Not sure what my problem is right now, here is my code....</p> <pre><code>import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.io.FileNotFoundException; import java.util.ArrayList; import java.util.Scanner; public class readingFile { /** * @param args * @throws IOException * @throws validException */ public static void main(String[] args) throws IOException, checkException { System.out.println("Enter file name: " ); Scanner keyboard = new Scanner(System.in); BufferedReader inputStream = null; ArrayList&lt;String&gt; file = new ArrayList&lt;String&gt;(); String fileName = keyboard.next(); System.out.println ("The file " + fileName + " has the following lines below: "); System.out.println(); try { inputStream = new BufferedReader(new FileReader(fileName)); ArrayList&lt;String&gt; lines = new ArrayList&lt;String&gt;(); while(true) { String line = inputStream.readLine(); if(line ==null) { break; } Scanner itemnize = new Scanner(line); while(itemnize.hasNext()) { lines.add(itemnize.next()); } lines.addAll(lines); System.out.println(lines+"\n"); } System.out.println("Please enter the line number and word number"); int index1 = keyboard.nextInt(); int index = keyboard.nextInt(); System.out.println("The word is: "+ lines.get(index)); } catch(FileNotFoundException e) { System.out.println("Error opening the file " + fileName); } inputStream.close(); } private static void checkValid(ArrayList&lt;String&gt; items, int index) throws checkException { throw new checkException("Not Found"); } } </code></pre>
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    1. USSujay
    1. USMatt McCarthy
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      1. VTDownMod
    1. COCouldn't you just subtract one from index and index1 before accessing the data?
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      1. POReading certain sentences from datafile.txt in java
      1. USPeter Liljenberg
    2. COIndices of Java collections start at 0 by convention. However, you just need to subtract 1 from the value the user has entered. I would write an answer, but please try to fix your code yourself first and add what happened and what you expected to the question.
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      1. POReading certain sentences from datafile.txt in java
      1. USMichael Schmeißer
    3. COI did write what happens and what I want it to do
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      1. POReading certain sentences from datafile.txt in java
      1. USMatt McCarthy
 

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