javax.swing.table
Interface TableModel
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- All Known Implementing Classes:
- AbstractTableModel, DefaultTableModel
public interface TableModelTheTableModelinterface specifies the methods theJTablewill use to interrogate a tabular data model.The
JTablecan be set up to display any data model which implements theTableModelinterface 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:
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JTable
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description voidaddTableModelListener(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.intgetColumnCount()Returns the number of columns in the model.StringgetColumnName(int columnIndex)Returns the name of the column atcolumnIndex.intgetRowCount()Returns the number of rows in the model.ObjectgetValueAt(int rowIndex, int columnIndex)Returns the value for the cell atcolumnIndexandrowIndex.booleanisCellEditable(int rowIndex, int columnIndex)Returns true if the cell atrowIndexandcolumnIndexis editable.voidremoveTableModelListener(TableModelListener l)Removes a listener from the list that is notified each time a change to the data model occurs.voidsetValueAt(Object aValue, int rowIndex, int columnIndex)Sets the value in the cell atcolumnIndexandrowIndextoaValue.
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Method Detail
getRowCount
int getRowCount()
Returns the number of rows in the model. AJTableuses 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:
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getColumnCount()
getColumnCount
int getColumnCount()
Returns the number of columns in the model. AJTableuses this method to determine how many columns it should create and display by default.- Returns:
- the number of columns in the model
- See Also:
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getRowCount()
getColumnName
String getColumnName(int columnIndex)
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:
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columnIndex- the index of the column - Returns:
- the name of the column
getColumnClass
Class<?> getColumnClass(int columnIndex)
Returns the most specific superclass for all the cell values in the column. This is used by theJTableto set up a default renderer and editor for the column.- Parameters:
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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 atrowIndexandcolumnIndexis editable. Otherwise,setValueAton the cell will not change the value of that cell.- Parameters:
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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:
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setValueAt(java.lang.Object, int, int)
getValueAt
Object getValueAt(int rowIndex, int columnIndex)
Returns the value for the cell atcolumnIndexandrowIndex.- Parameters:
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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
void setValueAt(Object aValue, int rowIndex, int columnIndex)
Sets the value in the cell atcolumnIndexandrowIndextoaValue.- Parameters:
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aValue- the new value -
rowIndex- the row whose value is to be changed -
columnIndex- the column whose value is to be changed - See Also:
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getValueAt(int, int),isCellEditable(int, int)
addTableModelListener
void addTableModelListener(TableModelListener l)
Adds a listener to the list that is notified each time a change to the data model occurs.- Parameters:
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l- the TableModelListener
removeTableModelListener
void removeTableModelListener(TableModelListener l)
Removes a listener from the list that is notified each time a change to the data model occurs.- Parameters:
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l- the TableModelListener
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