how to update and send it to my file txt?

[half quarry]

hello newbie here

[sage karma]

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

[sage karma]

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[half quarry]

my code is

private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {                                     
        DefaultTableModel tblModel = (DefaultTableModel) jTable1.getModel();
        //File file = new File("users.txt");
        
        //set data to text fiel when row is selected
        String tblfn = tblModel.getValueAt(jTable1.getSelectedRow(), 0).toString();
        String tblmn = tblModel.getValueAt(jTable1.getSelectedRow(), 0).toString();
        String tblln = tblModel.getValueAt(jTable1.getSelectedRow(), 0).toString();
        
        txt_fn.setText(tblfn);
        txt_mn.setText(tblmn);
        txt_ln.setText(tblln);
        
    }                                    

    private void btn_uActionPerformed(java.awt.event.ActionEvent evt) {                                      
        File file = new File("users.txt");
        DefaultTableModel tblModel = (DefaultTableModel) jTable1.getModel();
        
        
        
                    if(jTable1.getSelectedRowCount() == 1){
                    String fname = txt_fn.getText();
                    String mname=txt_mn.getText();
                    String lname=txt_ln.getText();
        
                    tblModel.setValueAt(fname, jTable1.getSelectedRow(), 0);
                    tblModel.setValueAt(mname, jTable1.getSelectedRow(), 1);
                    tblModel.setValueAt(lname, jTable1.getSelectedRow(), 2);
        
        
        JOptionPane.showMessageDialog(this, "update");
        
    }else{
            if(jTable1.getRowCount()==0){
                JOptionPane.showMessageDialog(this, "empty");
            }else{
                JOptionPane.showMessageDialog(this, "select a row to update");
            }
        }
        
    }

[sage karma]

Detected code, here are some useful tools:

Formatted code

private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
  DefaultTableModel tblModel = (DefaultTableModel) jTable1.getModel();
  //File file = new File("users.txt");
  //set data to text fiel when row is selected
  String tblfn = tblModel.getValueAt(jTable1.getSelectedRow(), 0).toString();
  String tblmn = tblModel.getValueAt(jTable1.getSelectedRow(), 0).toString();
  String tblln = tblModel.getValueAt(jTable1.getSelectedRow(), 0).toString();
  txt_fn.setText(tblfn);
  txt_mn.setText(tblmn);
  txt_ln.setText(tblln);
}
private void btn_uActionPerformed(java.awt.event.ActionEvent evt) {
  File file = new File("users.txt");
  DefaultTableModel tblModel = (DefaultTableModel) jTable1.getModel();
  if (jTable1.getSelectedRowCount() == 1) {
    String fname = txt_fn.getText();
    String mname = txt_mn.getText();
    String lname = txt_ln.getText();
    tblModel.setValueAt(fname, jTable1.getSelectedRow(), 0);
    tblModel.setValueAt(mname, jTable1.getSelectedRow(), 1);
    tblModel.setValueAt(lname, jTable1.getSelectedRow(), 2);
    JOptionPane.showMessageDialog(this , "update");
  }
  else {
    if (jTable1.getRowCount() == 0) {
      JOptionPane.showMessageDialog(this , "empty");
    }
    else {
      JOptionPane.showMessageDialog(this , "select a row to update");
    }
  }
}

[half quarry]

i just want to save it need a clue on how to save it

[quartz helm]

Files.writeString(Path.of("text file.txt"), "Some content. ")

[half quarry]

🥹 omg im so dum

[half quarry]

i give up i thought i just replace thetblModel.setValueAt(fname, jTable1.getSelectedRow(), 0)
where do i put this master?

[quartz helm]

Where you want to write the file

[sage karma]

Closed the thread due to inactivity.

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[half quarry]

i didn't gets your teaching master and redo my code i cant show it here but i got it thanks for the help