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POJava - Writing to txt in a JAR file
 

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  1. POJava - Writing to txt in a JAR file
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    <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/5052311/how-can-a-java-program-use-files-inside-the-jar-for-read-and-write">How can a Java program use files inside the .jar for read and write?</a> </p> </blockquote> <p>How do I write to a .txt file from a <a href="http://en.wikipedia.org/wiki/JAR_%28file_format%29" rel="nofollow noreferrer">JAR</a> java compiled project?</p> <p>When I run my projects, it doesn't give errors, but it just doesn't write to the .txt inside JAR file.</p> <p>I make the JAR file using:</p> <pre><code>netbeans clean /build tool </code></pre> <h3>Code:</h3> <pre><code>public class FileIO { private File file; private Scanner filescScanner, lineScanner; private PrintWriter fileWriter; private String[][] data; public FileIO () { data = new String[100][2]; } public String[][] getLineScores(){ return this.loadHighscores(this.getClass().getResourceAsStream("LineHighscores.txt")); } public String[][] getTimeScores(){ return this.loadHighscores(this.getClass().getResourceAsStream("TimeHighscores.txt")); } public void setLineScores( String name,String lines ){ boolean found= false; data = this.getLineScores(); for(int i = 0; i&lt;data.length &amp;&amp; !found ; i++){ if(data[i][0] == null || "Niemand".equals(data[i][0])){ data[i][0]=name; data[i][1]=lines; found=true; } } this.saveHighscores(this.getClass().getResource("LineHighscores.txt"),data); } public void setTimeScores(String time, String name){ boolean found= false; data = this.getLineScores(); for(int i = 0; i&lt;data.length &amp;&amp; !found ; i++){ if(data[i][0] == null || "Niemand".equals(data[i][0])){ data[i][0]=name; data[i][1]=time; found=true; } } this.saveHighscores(this.getClass().getResource("TimeHighscores.txt"),data); } private String[][] loadHighscores( InputStream resourceStream){ int x=0; String test = ""; try{ filescScanner = new Scanner(resourceStream); } catch(Exception ioe){ System.err.println(ioe); } if (filescScanner.hasNext()){ while(filescScanner.hasNextLine()&amp;&amp; x&lt;100) { lineScanner = new Scanner(filescScanner.nextLine()); lineScanner.useDelimiter("-/-"); data[x][0]=lineScanner.next();//name data[x][1]=lineScanner.next();//data x++; } lineScanner.close(); filescScanner.close(); } else{ data[0][0] = "Niemand"; data[0][1] = "0"; } return data; } private void saveHighscores( URL resourceStream, String[][] data){ int x=0; try { file = new File(resourceStream.toURI()); } catch (URISyntaxException ex) { Logger.getLogger(FileIO.class.getName()).log(Level.SEVERE, null, ex); } try { fileWriter = new PrintWriter(file); } catch (FileNotFoundException ex) { Logger.getLogger(FileIO.class.getName()).log(Level.SEVERE, null, ex); } if(data.length&gt;x){ while(data.length&gt;x &amp;&amp; data[x][0] != null ){ fileWriter.println(data[x][0]+"-/-"+data[x][1]); x++; } fileWriter.close(); } } public static void main(String[] args){ FileIO file = new FileIO(); file.setLineScores("55555555", "KoenKevin"); } } </code></pre>
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    1. USCommunity
    1. USKoen Demonie
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    1. COYou cannot update a Jar this way as it is a file. It's not a good idea to be altering a Jar after you released it. Can you not use the file system to save your file?
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      1. USPeter Lawrey
    2. COYou cant do that, you need to keep the txt outside the jar
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      1. USfredcrs
 

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