- All Known Implementing Classes:
AbstractTableModel
,DefaultTableModel
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:
-
Method Summary
Modifier and TypeMethodDescriptionvoid
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
Returns the number of columns in the model.getColumnName
(int columnIndex) Returns the name of the column atcolumnIndex
.int
Returns the number of rows in the model.getValueAt
(int rowIndex, int columnIndex) Returns the value for the cell atcolumnIndex
androwIndex
.boolean
isCellEditable
(int rowIndex, int columnIndex) Returns true if the cell atrowIndex
andcolumnIndex
is editable.void
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 atcolumnIndex
androwIndex
toaValue
.
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Method Details
-
getRowCount
int getRowCount()Returns the number of rows in the model. AJTable
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
int getColumnCount()Returns the number of columns in the model. AJTable
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:
-
getColumnName
Returns the name of the column atcolumnIndex
. 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
Returns the most specific superclass for all the cell values in the column. This is used by theJTable
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
boolean isCellEditable(int rowIndex, int columnIndex) Returns true if the cell atrowIndex
andcolumnIndex
is editable. Otherwise,setValueAt
on the cell will not change the value of that cell.- Parameters:
rowIndex
- the row whose value to be queriedcolumnIndex
- the column whose value to be queried- Returns:
- true if the cell is editable
- See Also:
-
getValueAt
Returns the value for the cell atcolumnIndex
androwIndex
.- Parameters:
rowIndex
- the row whose value is to be queriedcolumnIndex
- the column whose value is to be queried- Returns:
- the value Object at the specified cell
-
setValueAt
Sets the value in the cell atcolumnIndex
androwIndex
toaValue
.- Parameters:
aValue
- the new valuerowIndex
- the row whose value is to be changedcolumnIndex
- the column whose value is to be changed- See Also:
-
addTableModelListener
Adds a listener to the list that is notified each time a change to the data model occurs.- Parameters:
l
- the TableModelListener
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removeTableModelListener
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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