save, update, refresh jTable to my text file

[marsh karma]

How to Update my save data and when i click refresh it duplicates how to stop the duplication?

[indigo trout]

<@&987246399047479336> please have a look, thanks.

[indigo trout]

While you are waiting for getting help, here are some tips to improve your experience:

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I uploaded your attachments as gist. That way, they are easier to read for everyone, especially mobile users 👍

[marsh karma]

this is my code for return and refresh

private void btnRefreshActionPerformed(java.awt.event.ActionEvent evt) {                                           
        String filePath = "C:\\Users\\Admin\\Documents\\zzzzz0\\DocFile.txt";
            File file = new File(filePath);
            
            try {
            FileReader fr = new FileReader(file);
            BufferedReader br = new BufferedReader(fr);
            
            DefaultTableModel model = (DefaultTableModel)jTable1.getModel();
            Object[] lines = br.lines().toArray();
            
            for(int i=0; i<lines.length; i++){
            String[] row = lines[i].toString().split(",");
            model.addRow(row);
            }
            
            } catch (FileNotFoundException ex) {
            Logger.getLogger(AdminLobby.class.getName()).log(Level.SEVERE, null, ex);
            }
    }

private void btnUpdateActionPerformed(java.awt.event.ActionEvent evt) {                                          
        
        String fName=txtDocFullName.getText();
        String dUser=txtDocUser.getText();
        String dPass=txtDocPass.getText();
        String filePath = "C:\\Users\\Admin\\Documents\\zzzzz0\\DocFile.txt";
            File file = new File(filePath);
            try {
            FileWriter fw = new FileWriter(file);
            fw.write(fName+","+dUser+","+dPass);
            //","+contactNo+
            fw.close();
            BufferedWriter bw = new BufferedWriter(fw);
            
            for(int i=0; i<jTable1.getRowCount();i++){
            for(int j=0; j<jTable1.getColumnCount();j++){
            bw.write(jTable1.getValueAt(i, j).toString());
            }
            bw.newLine();
            }
            
            bw.close();
            fw.close();
            
            } catch (IOException ex) {
            Logger.getLogger(AdminLobby.class.getName()).log(Level.SEVERE, null, ex);
            }
}

[indigo trout]

Detected code, here are some useful tools:

Formatted code

private void btnRefreshActionPerformed(java.awt.event.ActionEvent evt) {
  String filePath = "C:\\Users\\Admin\\Documents\\zzzzz0\\DocFile.txt";
  File file = new File(filePath);
  try {
    FileReader fr = new FileReader(file);
    BufferedReader br = new BufferedReader(fr);
    DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
    Object[] lines = br.lines().toArray();
    for (int i = 0; i < lines.length; i++) {
      String[] row = lines[i] .toString().split(",");
      model.addRow(row);
    }
  } catch (FileNotFoundException ex) {
    Logger.getLogger(AdminLobby.class .getName()).log(Level.SEVERE, null , ex);
  }
}
private void btnUpdateActionPerformed(java.awt.event.ActionEvent evt) {
  String fName = txtDocFullName.getText();
  String dUser = txtDocUser.getText();
  String dPass = txtDocPass.getText();
  String filePath = "C:\\Users\\Admin\\Documents\\zzzzz0\\DocFile.txt";
  File file = new File(filePath);
  try {
    FileWriter fw = new FileWriter(file);
    fw.write(fName + "," + dUser + "," + dPass);
    //","+contactNo+
    fw.close();
    BufferedWriter bw = new BufferedWriter(fw);
    for (int i = 0; i < jTable1.getRowCount(); i++) {
      for (int j = 0; j < jTable1.getColumnCount(); j++) {
        bw.write(jTable1.getValueAt(i, j).toString());
      }
      bw.newLine();
    }
    bw.close();
    fw.close();
  } catch (IOException ex) {
    Logger.getLogger(AdminLobby.class .getName()).log(Level.SEVERE, null , ex);
  }
}

[marsh karma]

Update
i have only one problem left can anyone know how to update my table?
🥹