title: How to transform an .txt file to .csv with Java?
body: <p><strong>How to transform an .txt file to .csv with Java?</strong></p>
  
  <p>I did a Java project where I read a .txt file, and I need to use their data to create a .csv file, how should I split the data in the variable where the text is, and how do I turn it into an Excel file (csv)?!</p>
  
  <pre><code>public class main {
  
  public static void main(String args[]) {
      File f = main.dialogoDeAbrirArquivo("Abrir...", 
              JFileChooser.FILES_ONLY, false, new FileNameExtensionFilter("Text File", "txt"),null, null);
  }
  
  public static File dialogoDeAbrirArquivo(String tituloDaJanela, int selectionMode, boolean acceptAllFileFilterUsed,
          FileNameExtensionFilter filtro, Component componente,File defaltDirectory) {
  
      UIManager.put("FileChooser.openDialogTitleText", tituloDaJanela);
      final JFileChooser fileChooser = new JFileChooser();
      fileChooser.setFileSelectionMode(selectionMode);
      fileChooser.setAcceptAllFileFilterUsed(acceptAllFileFilterUsed);
      fileChooser.setCurrentDirectory(defaltDirectory);
  
      Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
      int x = (dim.width - fileChooser.getSize().width) / 2;
      int y = (dim.height - fileChooser.getSize().height) / 2;
      fileChooser.setLocation(x, y);
  
      fileChooser.addChoosableFileFilter(filtro);
  
      int retorno = fileChooser.showOpenDialog(componente);
      if (retorno == JFileChooser.APPROVE_OPTION) {
          File arquivo = fileChooser.getSelectedFile();
          System.out.println("Open file: " + arquivo.getName());
          return arquivo;
      }
      return null;
  }
  </code></pre>