CODEWITHSUNDEEP
javamysqlswingjdbc
Hitesh Ovhal
Hitesh Ovhal

Reputation: 3

How to add new column into JTable with JCheckboxes for each rows

I want a Jtable having three columns where two columns is selected from Database and third column need to have JcheckBoxes for each rows

I have a code like this

    DefaultTableModel model = new DefaultTableModel();
    model.setColumnIdentifiers(columns);

    table = new JTable();
    table.setModel(model);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    table.setFillsViewportHeight(true);
    JScrollPane scroll = new JScrollPane(table);

    TableColumn tc = table.getColumnModel().getColumn(2);
    tc.setCellEditor(table.getDefaultEditor(Boolean.class));         
   tc.setCellRenderer(table.getDefaultRenderer(Boolean.class));
    frame.getContentPane().add(scroll);

    String col_1 = "";
    Integer col_2 = 0;

 try
  {
   ////DefaultTableModel default_model = new DefaultTableModel();
  ////default_model.setColumnIdentifiers(columns);
  ((DefaultTableModel) model).setColumnIdentifiers(columns);
  Class.forName("com.mysql.jdbc.Driver").newInstance();
  Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/hdb","root","root");

  Statement stmnt = con.createStatement();

  java.sql.ResultSet rs=stmnt.executeQuery("select col_1,col_2 from databaseTable");

        while(rs.next()) 
        {
            act_name = rs.getString("col_1");
            time_in_min = rs.getInt("col_2");
            model.addRow(new Object[]{col_1,col_2,new Boolean(false)});
            //////((DefaultTableModel) model).addRow(new Object[]{col_1,col_2, Boolean.FALSE});

        }

        con.close();

    }catch(Exception e)
    {
        e.printStackTrace();
    }

}

It just gives the column with false value not the checkboxes

Upvotes: 0

Views: 58

Answers (1)

c0der
c0der

Reputation: 18792

Override to return the right column class 

class MyTableModel extends DefaultTableModel{

    public Class<?> getColumnClass(int columnIndex) {
        return getValueAt(0, columnIndex).getClass();
    }
}

And use it as your table model.
These lines 

TableColumn tc = table.getColumnModel().getColumn(2);
tc.setCellEditor(table.getDefaultEditor(Boolean.class));         
tc.setCellRenderer(table.getDefaultRenderer(Boolean.class));

will not be needed.

Upvotes: 1

Related Questions