Class AbstractTableModel

java.lang.Object
javax.swing.table.AbstractTableModel
All Implemented Interfaces:
Serializable, TableModel
Direct Known Subclasses:
DefaultTableModel
public abstract class AbstractTableModel extends Object implements TableModel, Serializable
This abstract class provides default implementations for most of the methods in the TableModel interface. It takes care of the management of listeners and provides some conveniences for generating TableModelEvents and dispatching them to the listeners. To create a concrete TableModel as a subclass of AbstractTableModel you need only provide implementations for the following three methods: 
  public int getRowCount();
  public int getColumnCount();
  public Object getValueAt(int row, int column);

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

  • Field Details

  • Constructor Details

    • AbstractTableModel

      protected AbstractTableModel()
      Constructor for subclasses to call.

  • Method Details

    • getColumnName

      public String getColumnName(int column)
      Returns a default name for the column using spreadsheet conventions: A, B, C, ... Z, AA, AB, etc. If column cannot be found, returns an empty string.
      Specified by:
      getColumnName in interface TableModel
      Parameters:
      column - the column being queried
      Returns:
      a string containing the default name of column

    • findColumn

      public int findColumn(String columnName)
      Returns a column given its name. Implementation is naive so this should be overridden if this method is to be called often. This method is not in the TableModel interface and is not used by the JTable.
      Parameters:
      columnName - string containing name of column to be located
      Returns:
      the column with columnName, or -1 if not found

    • getColumnClass

      public Class<?> getColumnClass(int columnIndex)
      Returns Object.class regardless of columnIndex.
      Specified by:
      getColumnClass in interface TableModel
      Parameters:
      columnIndex - the column being queried
      Returns:
      the Object.class

    • isCellEditable

      public boolean isCellEditable(int rowIndex, int columnIndex)
      Returns false. This is the default implementation for all cells.
      Specified by:
      isCellEditable in interface TableModel
      Parameters:
      rowIndex - the row being queried
      columnIndex - the column being queried
      Returns:
      false
      See Also:

    • setValueAt

      public void setValueAt(Object aValue, int rowIndex, int columnIndex)
      This empty implementation is provided so users don't have to implement this method if their data model is not editable.
      Specified by:
      setValueAt in interface TableModel
      Parameters:
      aValue - value to assign to cell
      rowIndex - row of cell
      columnIndex - column of cell
      See Also:

    • addTableModelListener

      public void addTableModelListener(TableModelListener l)
      Adds a listener to the list that's notified each time a change to the data model occurs.
      Specified by:
      addTableModelListener in interface TableModel
      Parameters:
      l - the TableModelListener

    • removeTableModelListener

      public void removeTableModelListener(TableModelListener l)
      Removes a listener from the list that's notified each time a change to the data model occurs.
      Specified by:
      removeTableModelListener in interface TableModel
      Parameters:
      l - the TableModelListener

    • getTableModelListeners

      public TableModelListener[] getTableModelListeners()
      Returns an array of all the table model listeners registered on this model.
      Returns:
      all of this model's TableModelListeners or an empty array if no table model listeners are currently registered
      Since:
      1.4
      See Also:

    • fireTableDataChanged

      public void fireTableDataChanged()
      Notifies all listeners that all cell values in the table's rows may have changed. The number of rows may also have changed and the JTable should redraw the table from scratch. The structure of the table (as in the order of the columns) is assumed to be the same.
      See Also:

    • fireTableStructureChanged

      public void fireTableStructureChanged()
      Notifies all listeners that the table's structure has changed. The number of columns in the table, and the names and types of the new columns may be different from the previous state. If the JTable receives this event and its autoCreateColumnsFromModel flag is set it discards any table columns that it had and reallocates default columns in the order they appear in the model. This is the same as calling setModel(TableModel) on the JTable.
      See Also:

    • fireTableRowsInserted

      public void fireTableRowsInserted(int firstRow, int lastRow)
      Notifies all listeners that rows in the range [firstRow, lastRow], inclusive, have been inserted.
      Parameters:
      firstRow - the first row
      lastRow - the last row
      See Also:

    • fireTableRowsUpdated

      public void fireTableRowsUpdated(int firstRow, int lastRow)
      Notifies all listeners that rows in the range [firstRow, lastRow], inclusive, have been updated.
      Parameters:
      firstRow - the first row
      lastRow - the last row
      See Also:

    • fireTableRowsDeleted

      public void fireTableRowsDeleted(int firstRow, int lastRow)
      Notifies all listeners that rows in the range [firstRow, lastRow], inclusive, have been deleted.
      Parameters:
      firstRow - the first row
      lastRow - the last row
      See Also:

    • fireTableCellUpdated

      public void fireTableCellUpdated(int row, int column)
      Notifies all listeners that the value of the cell at [row, column] has been updated.
      Parameters:
      row - row of cell which has been updated
      column - column of cell which has been updated
      See Also:

    • fireTableChanged

      public void fireTableChanged(TableModelEvent e)
      Forwards the given notification event to all TableModelListeners that registered themselves as listeners for this table model.
      Parameters:
      e - the event to be forwarded
      See Also:

    • getListeners

      public <T extends EventListener> T[] getListeners(Class<T> listenerType)
      Returns an array of all the objects currently registered as FooListeners upon this AbstractTableModel. FooListeners are registered using the addFooListener method.

      You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a model m for its table model listeners with the following code: 

      TableModelListener[] tmls = (TableModelListener[])(m.getListeners(TableModelListener.class));
      If no such listeners exist, this method returns an empty array.

      Type Parameters:
      T - the listener type
      Parameters:
      listenerType - the type of listeners requested
      Returns:
      an array of all objects registered as FooListeners on this component, or an empty array if no such listeners have been added
      Throws:
      ClassCastException - if listenerType doesn't specify a class or interface that implements java.util.EventListener
      Since:
      1.3
      See Also: