Question

I am saving a .txt and .doc file containing the data from my JTable. At the minute when it saves it lays the text out like its in a table, but due to different lengths of data it does not fit. So I am trying to get the date to lay out as follows:

Column 1 name: row 1 column 1 data

Column 2 name: row 1 column 2 data

Column 3 name: row 1 column 3 data

Column 4 name: row 1 column 4 data

Column 1 name: row 2 column 1 data

Column 2 name: row 2 column 2 data

Column 3 name: row 2 column 3 data

Column 4 name: row 2 column 4 data

etc.

The code I have at the minute is:

private void saveResultsActionPerformed(ActionEvent evt) {


    int returnVal = fileChooser.showSaveDialog(NewJFrame.this);
    if (returnVal == JFileChooser.APPROVE_OPTION) {
        try {
            File file = fileChooser.getSelectedFile();
            PrintWriter os = new PrintWriter(file);
            os.println("");
            for (int col = 0; col < table.getColumnCount(); col++) {
                os.print(table.getColumnName(col) + "\t");
            }

            os.println("");
            os.println("");

            for (int i = 0; i < table.getRowCount(); i++) {
                for (int j = 0; j < table.getColumnCount(); j++) {
                    os.print(table.getValueAt(i, j).toString() + "\t");

                }
                os.println("");
            }
            os.close();
            System.out.println("Done!");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

But please keep in mind that each of my tables has different number of columns and rows.
Ive tried saving the columns and data in arrays, and I have a feeling this is the right way to go around the problem but I cant figure out how to print it in the order i mentioned,

Answer 1

The algorithm is quite simple:

for (int row = 0; row < table.getRowCount(); row++) {
    for (int col = 0; col < table.getColumnCount(); col++) {
        os.print(table.getColumnName(col));
        os.print(": ");
        os.println(table.getValueAt(row, col));
    }
}