Table Model :

As we know in MVC architecture Model holds the data, and the methods to manipulate that,
in same manner the JTableModel also holds the table data, and the methods like
setValueAt(), isCellEditable() , getRowCount() etc., which manage that data.

public class YourAppDefaultTableModel extends DefaultTableModel {

  public YourAppDefaultTableModel(Object[][] rowData, Object[] columnNames) {
    super(rowData,columnNames);
  }

  public YourAppDefaultTableModel(Object[][] rowData, Object[] columnNames, boolean hasHeader) {
    super(rowData,columnNames);
    this.hasHeader = hasHeader;
  }

  public Object getValueAt(int row, int col)
  {
    int rowIndex = row;
    if (indexes != null && indexes.length > 0 && row < indexes.length)
      rowIndex = indexes[row];
    return super.getValueAt(rowIndex, col);
  }

  public void setValueAt(Object value, int row, int col)
  {
    int rowIndex = row;
    if (indexes != null && indexes.length > 0 && row < indexes.length)
      rowIndex = indexes[row];
    super.setValueAt(value, rowIndex, col);
  }

 public boolean isCellEditable(int row, int col) {
 
            return false;
    }
  public void setDataValue(Object[][] data, JTable table){
   this.dataVector = convertToVector(data);
   int col1, col2;
   col1 = table.convertColumnIndexToModel(0);
   col2 = table.convertColumnIndexToModel(1);
   fireTableDataChanged();
  }
  public void setDataValue(Object[][] data) {
   this.dataVector = convertToVector(data);
  }
}

JTable : 

JTable table = new JTable(new YourAppDefaultTableModel());

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