Auto Refresh in Swing (Jtable)

Question

I wrote a code which is get text from text area and save to file after that get data from file and show at jtable but I want to do that automatically when I add a new text to file it should be automatically show at the jtable does any one can help me?

try {
                    BufferedReader br = new BufferedReader(new FileReader(new File ("Member.txt")));


                    Object [] row = {id, firstname, lastname, age};

                    DefaultTableModel dtm = (DefaultTableModel) table.getModel();



                    Object[] tableLines = br.lines().toArray();

                    for(int i = 0; i < tableLines.length; i++)
                    {
                        String line = tableLines[i].toString().trim();
                        String[] dataRow = line.split(" ");
                        dtm.addRow(dataRow);
                    }


                } catch (Exception ex) {
                    System.out.println(ex);
                }

this code help me to show data from file at jtable.

Answer 1

Your starting point is: using a watch service to determine when that file changed on disk.

Then you have to read the whole file and figure what changed (for example by keeping a "copy" of all lines of the file in memory).

Then you extract the newly added lines and add them to your table model.