Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Interface TableModel - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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javax.swing.table
Interface TableModel

All Known Implementing Classes:: AbstractTableModel

public interface TableModel

The TableModel interface ispecifies 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);

See Also:: JTable, AbstractTableModel

Method Summary

void addTableModelListener(TableModelListener l)
          Add a listener to the list that's notified each time a change to the data model occurs.

Class getColumnClass(int columnIndex)
          Returns the lowest common denominator Class in the column.

int getColumnCount()
          Returns the number of columns managed by the data source object.

String getColumnName(int columnIndex)
          Returns the name of the column at columnIndex.

int getRowCount()
          Returns the number of records managed by the data source object.

Object getValueAt(int rowIndex, int columnIndex)
          Returns an attribute 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)
          Remove a listener from the list that's notified each time a change to the data model occurs.

void setValueAt(Object aValue, int rowIndex, int columnIndex)
          Sets an attribute value for the record in the cell at columnIndex and rowIndex.

Method Detail

getRowCount

public 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()

getColumnCount

public 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()

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 on a table can have the same name.

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

getColumnClass

public 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.

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 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(java.lang.Object, int, int)

getValueAt

public 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

setValueAt

public 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(int, int), isCellEditable(int, int)

addTableModelListener

public 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

removeTableModelListener

public 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