在JTable（JAVA）的列中添加JButton

Question

I am currently reading an excel sheet ( .xls ) and placing it in a JTable . The excel sheet consists of 3 columns. I am successfully able to read it. However, when reading the excel sheet, I want to add an extra fourth column in the JTable that includes JButtons (One button for each row). When JButton is clicked in a row, I want to take the content of the third column and perform some action.
I am currently using the code from here .

What is the best way to add JButtons in a JTable column?

Answer 1

You can add your button this way.

class MyRenderer implements TableCellRenderer {

    JButton button = new JButton();

    public Component getTableCellRendererComponent(JTable table,
            Object value,
            boolean isSelected,
            boolean hasFocus,
            int row, int column) {

        button.setText(value.toString());
        return button;
    }

and to add action listener do this

class mybutttoneditor extends AbstractCellEditor implements TableCellEditor,
            ActionListener {

        JTable table;
        JButton button = new JButton();



        public mybutttoneditor(JTable table) {
            this.table = table;

             button.setFont(new Font("Serif", Font.BOLD, 14));
             button.setForeground(Color.blue);
             button.addActionListener(this);
        }

        public void actionPerformed(ActionEvent e) {
          final int row = table.getEditingRow();
        String column3data=table.getValueAt(row, 2);
        //do what you want with the data here 
        //hopefully this helps and if so accept the answer
        }
        //other abstract methods are here
        }
}

    DefaultTableModel md=(DefaultTableModel)mytable.getModel();

    //do this while reading your excel sheet

    Object row[]={"dataone","datatwo","data3","Open Button"};
    md.addRow(row);
    TableColumnModel colModel = mytable.getColumnModel();
    colModel.getColumn(3).setCellRenderer(new MyRenderer());
   colModel.getColumn(3).setCellEditor(new mybutttoneditor(mytable));

Answer 2

You can create a class extending JButton. Then add property to that class.(field with getter and setter) when you adding data to the table, add JButton instance for each row using your custom JButton class and set value in the third column using setter method. So you can use that value in processing in the click event. Hope it helps :)