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## javax.swing.table
Interface TableModel

All Known Implementing Classes:
  AbstractTableModel

public interface TableModel

The `TableModel` interface specifies the methods the `JTable` will use to interrogate a tabular data model.

The `JTable` can be set up to display any data model which implements the `TableModel` interface with a couple of lines of code:

      	TableModel myData = new MyTableModel();
      	JTable table = new JTable(myData);

For further documentation, see Creating a Table Model in The Java Tutorial.

See Also:
  `JTable`

Method Summary
`void` | `addTableModelListener(TableModelListener l)` Adds a listener to the list that is notified each time a change to the data model occurs.
`Class` | `getColumnClass(int columnIndex)` Returns the most specific superclass for all the cell values in the column.
`int` | `getColumnCount()` Returns the number of columns in the model.
`String` | `getColumnName(int columnIndex)` Returns the name of the column at `columnIndex`.
`int` | `getRowCount()` Returns the number of rows in the model.
`Object` | `getValueAt(int rowIndex, int columnIndex)` Returns the value for the cell at `columnIndex` and `rowIndex`.
`boolean` | `isCellEditable(int rowIndex, int columnIndex)` Returns true if the cell at `rowIndex` and `columnIndex` is editable.
`void` | `removeTableModelListener(TableModelListener l)` Removes a listener from the list that is notified each time a change to the data model occurs.
`void` | `setValueAt(Object aValue, int rowIndex, int columnIndex)` Sets the value in the cell at `columnIndex` and `rowIndex` to `aValue`.

Method Detail

### getRowCount

    public int getRowCount()

  Returns the number of rows in the model. A `JTable` uses this method to determine how many rows it should display. This method should be quick, as it is called frequently during rendering.

  Returns:
    the number of rows in the model
  See Also:
    `getColumnCount()`

### getColumnCount

    public int getColumnCount()

  Returns the number of columns in the model. A `JTable` uses this method to determine how many columns it should create and display by default.

  Returns:
    the number of columns in the model
  See Also:
    `getRowCount()`

### getColumnName

    public String getColumnName(int columnIndex)

  Returns the name of the column at `columnIndex`. This is used to initialize the table's column header name. Note: this name does not need to be unique; two columns in a table can have the same name.

  Parameters:
    `columnIndex` - the index of the column
  Returns:
    the name of the column

### getColumnClass

    public Class getColumnClass(int columnIndex)

  Returns the most specific superclass for all the cell values in the column. This is used by the `JTable` to set up a default renderer and editor for the column.

  Parameters:
    `columnIndex` - the index of the column
  Returns:
    the common ancestor class of the object values in the model.

### isCellEditable

    public boolean isCellEditable(int rowIndex,
                                  int columnIndex)

  Returns true if the cell at `rowIndex` and `columnIndex` is editable. Otherwise, `setValueAt` on the cell will not change the value of that cell.

  Parameters:
    `rowIndex` - the row whose value to be queried
    `columnIndex` - the column whose value to be queried
  Returns:
    true if the cell is editable
  See Also:
    `setValueAt(java.lang.Object, int, int)`

### getValueAt

    public Object getValueAt(int rowIndex,
                             int columnIndex)

  Returns the value for the cell at `columnIndex` and `rowIndex`.

  Parameters:
    `rowIndex` - the row whose value is to be queried
    `columnIndex` - the column whose value is to be queried
  Returns:
    the value Object at the specified cell

### setValueAt

    public void setValueAt(Object aValue,
                           int rowIndex,
                           int columnIndex)

  Sets the value in the cell at `columnIndex` and `rowIndex` to `aValue`.

  Parameters:
    `aValue` - the new value
    `rowIndex` - the row whose value is to be changed
    `columnIndex` - the column whose value is to be changed
  See Also:
    `getValueAt(int, int)`, `isCellEditable(int, int)`

### addTableModelListener

    public void addTableModelListener(TableModelListener l)

  Adds a listener to the list that is notified each time a change to the data model occurs.

  Parameters:
    `l` - the TableModelListener

### removeTableModelListener

    public void removeTableModelListener(TableModelListener l)

  Removes a listener from the list that is notified each time a change to the data model occurs.

  Parameters:
    `l` - the TableModelListener

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.