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Interface java.awt.swing.table.TableModel

public interface TableModel

It is important to note the methods, getColumnIdentifier(), getColumnClass(), getColumnName(), and getColumnCount() are only used in JTable's createDefaultColumnsFromModel() method to create the set of default TableColumns from information provided for in this model. If your model's column structure changes dynamically and you would like the JTable to reflect those changes, you can either call the createDefaultColumnsFromModel() directly to force the table to rebuild the columns. Or you can set the autoCreateColumnsFromModel flag to true, and then send the tableChanged() notification with the TableModelEvent indicating the entire table has changed. ie. new TableModelEvent(this, -1). The columns will be rebuild when it receives that tableChanged() call.

See Also:

JTable, AbstractTableModel, DefaultTableModel

addTableModelListener(TableModelListener)

Add a listener to the list that's notified each time a change to the data model occurs.

getColumnClass(int)

Returns the lowest common denominator Class in the column.

getColumnCount()

Returns the number of columns managed by the data source object.

getColumnIdentifier(int)

Returns the unique column identifier object for column at columnIndex managed by this data source object.

getColumnIndex(Object)

Returns the index of the column with an identifier matching the parameter columnIdentifier using the equals() method for comparison.

getColumnName(int)

Returns the name of the column at columnIndex.

getRowCount()

Returns the number of records managed by the data source object.

getValueAt(int, int)

Returns an attribute value for the cell at columnIndex and rowIndex.

isCellEditable(int, int)

Returns true if the cell at rowIndex and columnIndex is editable.

removeTableModelListener(TableModelListener)

Remove a listener from the list that's notified each time a change to the data model occurs.

setValueAt(Object, int, int)

Sets an attribute value for the record in the cell at columnIndex and rowIndex.

public abstract int getRowCount()

Returns the number of records managed by the data source object. A JTable uses this method to determine how many rows it should create and display. This method should be quick, as it is call by JTable quite frequently.

Returns:

the number or rows in the model

See Also:

getColumnCount

public abstract int getColumnCount()

Returns the number of columns managed by the data source object. A JTable uses this method to determine how many columns it should create and display on initialization.

Returns:

the number or columns in the model

See Also:

getRowCount

public abstract 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 on a table can have the same name.

Parameters:

columnIndex - the index of column

Returns:

the name of the column

public abstract Object getColumnIdentifier(int columnIndex)

Returns the unique column identifier object for column at columnIndex managed by this data source object.

Parameters:

columnIndex - the index of column

Returns:

the unique identifier of the column

public abstract int getColumnIndex(Object columnIdentifier)

Returns the index of the column with an identifier matching the parameter columnIdentifier using the equals() method for comparison.

Parameters:

columnIdentifier - the unique idenitifier of the column

Returns:

the index of the column with the matching unique identifier

public abstract Class getColumnClass(int columnIndex)

Returns the lowest common denominator Class in the column. This is used by the table to set up a default renderer and editor for the column.

Returns:

the common ancestor class of the object values in the model.

public abstract 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 is to be looked up

columnIndex - the column whose value is to be looked up

Returns:

true if the cell is editable.

See Also:

setValueAt

public abstract Object getValueAt(int rowIndex,
                                  int columnIndex)

Returns an attribute value for the cell at columnIndex and rowIndex.

Parameters:

rowIndex - the row whose value is to be looked up

columnIndex - the column whose value is to be looked up

Returns:

the value Object at the specified cell

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

Sets an attribute value for the record in the cell at columnIndex and rowIndex. aValue is the new value.

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, isCellEditable

public abstract void addTableModelListener(TableModelListener l)

Add a listener to the list that's notified each time a change to the data model occurs.

Parameters:

l - the TableModelListener

public abstract void removeTableModelListener(TableModelListener l)

Remove a listener from the list that's notified each time a change to the data model occurs.

Parameters:

l - the TableModelListener

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