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javax.swing.table
Class DefaultTableModel
java.lang.Object
javax.swing.table.AbstractTableModel
javax.swing.table.DefaultTableModel
-
All Implemented Interfaces:
-
Serializable
,
TableModel
-
public class
DefaultTableModel
-
extends
AbstractTableModel
-
implements
Serializable
This is an implementation of TableModel that uses a Vector of Vectors to store the cell value objects.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans
TM
has been added to the java.beans package. Please see
XMLEncoder
.
-
See Also:
-
TableModel
,
getDataVector()
Fields inherited from class javax.swing.table.
AbstractTableModel
|
listenerList
|
Constructor Summary
|
DefaultTableModel
()
Constructs a default DefaultTableModel which is a table of zero columns and zero rows. |
DefaultTableModel
(int rowCount, int columnCount)
Constructs a DefaultTableModel with rowCount and columnCount of null object values. |
DefaultTableModel
(
Object
[][] data,
Object
[] columnNames)
Constructs a DefaultTableModel and initializes the table by passing data and columnNames to the setDataVector method. |
DefaultTableModel
(
Object
[] columnNames, int rowCount)
Constructs a DefaultTableModel with as many columns as there are elements in columnNames and rowCount of null object values. |
DefaultTableModel
(
Vector
columnNames, int rowCount)
Constructs a DefaultTableModel with as many columns as there are elements in columnNames and rowCount of null object values. |
DefaultTableModel
(
Vector
data,
Vector
columnNames)
Constructs a DefaultTableModel and initializes the table by passing data and columnNames to the setDataVector method. |
Method Summary
|
void |
addColumn
(
Object
columnName)
Adds a column to the model. |
void |
addColumn
(
Object
columnName,
Object
[] columnData)
Adds a column to the model. |
void |
addColumn
(
Object
columnName,
Vector
columnData)
Adds a column to the model. |
void |
addRow
(
Object
[] rowData)
Adds a row to the end of the model. |
void |
addRow
(
Vector
rowData)
Adds a row to the end of the model. |
protected static
Vector
|
convertToVector
(
Object
[] anArray)
Returns a vector that contains the same objects as the array. |
protected static
Vector
|
convertToVector
(
Object
[][] anArray)
Returns a vector of vectors that contains the same objects as the array. |
int |
getColumnCount
()
Returns the number of columns in this data table. |
String
|
getColumnName
(int column)
Returns the column name. |
Vector
|
getDataVector
()
Returns the Vector of Vectors that contains the table's data values. |
int |
getRowCount
()
Returns the number of rows in this data table. |
Object
|
getValueAt
(int row, int column)
Returns an attribute value for the cell at row and column. |
void |
insertRow
(int row,
Object
[] rowData)
Inserts a row at row in the model. |
void |
insertRow
(int row,
Vector
rowData)
Inserts a row at row in the model. |
boolean |
isCellEditable
(int row, int column)
Returns true regardless of parameter values. |
void |
moveRow
(int start, int end, int to)
Moves one or more rows from the
inclusive
inlcusive
range start to end to the to position in the model. |
void |
newDataAvailable
(
TableModelEvent
event)
Equivalent to fireTableChanged. |
void |
newRowsAdded
(
TableModelEvent
e)
Ensures that the new rows have the correct number of columns. |
void |
removeRow
(int row)
Removes the row at row from the model. |
void |
rowsRemoved
(
TableModelEvent
event)
Equivalent to fireTableChanged. |
void |
setColumnCount
(int columnCount)
Sets the number of columns in the model. |
void |
setColumnIdentifiers
(
Object
[] newIdentifiers)
Replaces the column identifiers in the model. |
void |
setColumnIdentifiers
(
Vector
columnIdentifiers)
Replaces the column identifiers in the model. |
void |
setDataVector
(
Object
[][] dataVector,
Object
[] columnIdentifiers)
Replaces the value in the dataVector instance variable with the values in the array dataVector. |
void |
setDataVector
(
Vector
dataVector,
Vector
columnIdentifiers)
Replaces the current dataVector instance variable with the new Vector of rows, dataVector. |
void |
setNumRows
(int rowCount)
Obsolete as of Java 2 platform v1.3. |
void |
setRowCount
(int rowCount)
Sets the number of rows in the model. |
void |
setValueAt
(
Object
aValue, int row, int column)
Sets the object value for the cell at column and row. |
Methods inherited from class javax.swing.table.
AbstractTableModel
|
addTableModelListener
,
findColumn
,
fireTableCellUpdated
,
fireTableChanged
,
fireTableDataChanged
,
fireTableRowsDeleted
,
fireTableRowsInserted
,
fireTableRowsUpdated
,
fireTableStructureChanged
,
getColumnClass
,
getListeners
,
getTableModelListeners
,
removeTableModelListener
|
Methods inherited from class java.lang.
Object
|
clone
,
equals
,
finalize
,
getClass
,
hashCode
,
notify
,
notifyAll
,
toString
,
wait
,
wait
,
wait
|
dataVector
protected Vector dataVector
-
The Vector of Vectors of Object values.
columnIdentifiers
protected Vector columnIdentifiers
-
The Vector of column identifiers.
DefaultTableModel
public DefaultTableModel()
-
Constructs a default DefaultTableModel which is a table of zero columns and zero rows.
DefaultTableModel
public DefaultTableModel(int rowCount,
int columnCount)
-
Constructs a DefaultTableModel with rowCount and columnCount of null object values.
-
Parameters:
-
rowCount - the number of rows the table holds
-
columnCount - the number of columns the table holds
-
See Also:
-
setValueAt(java.lang.Object, int, int)
DefaultTableModel
public DefaultTableModel(Vector columnNames,
int rowCount)
-
Constructs a DefaultTableModel with as many columns as there are elements in columnNames and rowCount of null object values. Each column's name will be taken from the columnNames vector.
-
Parameters:
-
columnNames - vector containing the names of the new columns; if this is null then the model has no columns
-
rowCount - the number of rows the table holds
-
See Also:
-
setDataVector(java.util.Vector, java.util.Vector)
,
setValueAt(java.lang.Object, int, int)
DefaultTableModel
public DefaultTableModel(Object[] columnNames,
int rowCount)
-
Constructs a DefaultTableModel with as many columns as there are elements in columnNames and rowCount of null object values. Each column's name will be taken from the columnNames array.
-
Parameters:
-
columnNames - array containing the names of the new columns; if this is null then the model has no columns
-
rowCount - the number of rows the table holds
-
See Also:
-
setDataVector(java.util.Vector, java.util.Vector)
,
setValueAt(java.lang.Object, int, int)
DefaultTableModel
public DefaultTableModel(Vector data,
Vector columnNames)
-
Constructs a DefaultTableModel and initializes the table by passing data and columnNames to the setDataVector method.
-
Parameters:
-
data - the data of the
table, a Vector of Vectors of Object values
table
-
columnNames - vector containing the names of the new columns
-
See Also:
-
getDataVector()
,
setDataVector(java.util.Vector, java.util.Vector)
DefaultTableModel
public DefaultTableModel(Object[][] data,
Object[] columnNames)
-
Constructs a DefaultTableModel and initializes the table by passing data and columnNames to the setDataVector method. The first index in the Object[][] array is the row index and the second is the column index.
-
Parameters:
-
data - the data of the table
-
columnNames - the names of the columns
-
See Also:
-
getDataVector()
,
setDataVector(java.util.Vector, java.util.Vector)
getDataVector
public Vector getDataVector()
-
Returns the Vector of Vectors that contains the table's data values. The vectors contained in the outer vector are each a single row of values. In other words, to get to the cell at row 1, column 5:
((Vector)getDataVector().elementAt(1)).elementAt(5);
-
-
-
Returns:
-
the vector of vectors containing the tables data values
-
See Also:
-
newDataAvailable(javax.swing.event.TableModelEvent)
,
newRowsAdded(javax.swing.event.TableModelEvent)
,
setDataVector(java.util.Vector, java.util.Vector)
setDataVector
public void setDataVector(Vector dataVector,
Vector columnIdentifiers)
-
Replaces the current dataVector instance variable with the new Vector of rows, dataVector.
Each row is represented in dataVector as a Vector of Object values.
columnIdentifiers are the names of the new columns. The first name in columnIdentifiers is mapped to column 0 in dataVector. Each row in dataVector is adjusted to match the number of columns in columnIdentifiers either by truncating the Vector if it is too long, or adding null values if it is too short.
Note that passing in a null value for dataVector results in unspecified behavior, an possibly an exception.
-
-
-
Parameters:
-
dataVector - the new data vector
-
columnIdentifiers - the names of the columns
-
See Also:
-
getDataVector()
setDataVector
public void setDataVector(Object[][] dataVector,
Object[] columnIdentifiers)
-
Replaces the value in the dataVector instance variable with the values in the array dataVector. The first index in the Object[][] array is the row index and the second is the column index. columnIdentifiers are the names of the new columns.
-
-
-
Parameters:
-
dataVector - the new data vector
-
columnIdentifiers - the names of the columns
-
See Also:
-
setDataVector(Vector, Vector)
newDataAvailable
public void newDataAvailable(TableModelEvent event)
-
Equivalent to fireTableChanged.
-
-
-
Parameters:
-
event - the change event
newRowsAdded
public void newRowsAdded(TableModelEvent e)
-
Ensures that the new rows have the correct number of columns. This is accomplished by using the setSize method in Vector which truncates vectors which are too long, and appends nulls if they are too short. This method also sends out a tableChanged notification message to all the listeners.
-
-
-
Parameters:
-
e - this TableModelEvent describes where the rows were added. If null it assumes all the rows were newly added
-
See Also:
-
getDataVector()
rowsRemoved
public void rowsRemoved(TableModelEvent event)
-
Equivalent to fireTableChanged.
-
-
-
Parameters:
-
event - the change event
setNumRows
public void setNumRows(int rowCount)
-
Obsolete as of Java 2 platform v1.3. Please use setRowCount instead.
-
-
setRowCount
public void setRowCount(int rowCount)
-
Sets the number of rows in the model. If the new size is greater than the current size, new rows are added to the end of the model If the new size is less than the current size, all rows at index rowCount and greater are discarded.
-
-
-
See Also:
-
setColumnCount(int)
addRow
public void addRow(Vector rowData)
-
Adds a row to the end of the model. The new row will contain null values unless rowData is specified. Notification of the row being added will be generated.
-
-
-
Parameters:
-
rowData - optional data of the row being added
addRow
public void addRow(Object[] rowData)
-
Adds a row to the end of the model. The new row will contain null values unless rowData is specified. Notification of the row being added will be generated.
-
-
-
Parameters:
-
rowData - optional data of the row being added
insertRow
public void insertRow(int row,
Vector rowData)
-
Inserts a row at row in the model. The new row will contain null values unless rowData is specified. Notification of the row being added will be generated.
-
-
-
Parameters:
-
row - the row index of the row to be inserted
-
rowData - optional data of the row being added
-
Throws:
-
ArrayIndexOutOfBoundsException
- if the row was invalid
insertRow
public void insertRow(int row,
Object[] rowData)
-
Inserts a row at row in the model. The new row will contain null values unless rowData is specified. Notification of the row being added will be generated.
-
-
-
Parameters:
-
row - the row index of the row to be inserted
-
rowData - optional data of the row being added
-
Throws:
-
ArrayIndexOutOfBoundsException
- if the row was invalid
moveRow
public void moveRow(int start,
int end,
int to)
-
Moves one or more rows from the
inclusive
inlcusive
range start to end to the to position in the model. After the move, the row that was at index start will be at index to. This method will send a tableChanged notification message to all the listeners.
Examples of moves:
1. moveRow(1,3,5);
a|B|C|D|e|f|g|h|i|j|k - before
a|e|f|g|h|B|C|D|i|j|k - after
2. moveRow(6,7,1);
a|b|c|d|e|f|G|H|i|j|k - before
a|G|H|b|c|d|e|f|i|j|k - after
-
-
-
Parameters:
-
start - the starting row index to be moved
-
end - the ending row index to be moved
-
to - the destination of the rows to be moved
-
Throws:
-
ArrayIndexOutOfBoundsException
- if any of the elements would be moved out of the table's range
removeRow
public void removeRow(int row)
-
Removes the row at row from the model. Notification of the row being removed will be sent to all the listeners.
-
-
-
Parameters:
-
row - the row index of the row to be removed
-
Throws:
-
ArrayIndexOutOfBoundsException
- if the row was invalid
setColumnIdentifiers
public void setColumnIdentifiers(Vector columnIdentifiers)
-
Replaces the column identifiers in the model. If the number of newIdentifiers is greater than the current number of columns, new columns are added to the end of each row in the model. If the number of newIdentifiers is less than the current number of columns, all the extra columns at the end of a row are discarded.
-
-
-
Parameters:
-
columnIdentifiers - vector of column identifiers. If null, set the model to zero columns
-
See Also:
-
setNumRows(int)
setColumnIdentifiers
public void setColumnIdentifiers(Object[] newIdentifiers)
-
Replaces the column identifiers in the model. If the number of newIdentifiers is greater than the current number of columns, new columns are added to the end of each row in the model. If the number of newIdentifiers is less than the current number of columns, all the extra columns at the end of a row are discarded.
-
-
-
Parameters:
-
newIdentifiers - array of column identifiers. If null, set the model to zero columns
-
See Also:
-
setNumRows(int)
setColumnCount
public void setColumnCount(int columnCount)
-
Sets the number of columns in the model. If the new size is greater than the current size, new columns are added to the end of the model with null cell values. If the new size is less than the current size, all columns at index columnCount and greater are discarded.
-
-
-
Parameters:
-
columnCount - the new number of columns in the model
-
See Also:
-
setColumnCount(int)
addColumn
public void addColumn(Object columnName)
-
Adds a column to the model. The new column will have the identifier columnName, which may be null. This method will send a tableChanged notification message to all the listeners. This method is a cover for addColumn(Object, Vector) which uses null as the data vector.
-
-
-
Parameters:
-
columnName - the identifier of the column being added
addColumn
public void addColumn(Object columnName,
Vector columnData)
-
Adds a column to the model. The new column will have the identifier columnName, which may be null. columnData is the optional vector of data for the column. If it is null the column is filled with null values. Otherwise, the new data will be added to model starting with the first element going to row 0, etc. This method will send a tableChanged notification message to all the listeners.
-
-
-
Parameters:
-
columnName - the identifier of the column being added
-
columnData - optional data of the column being added
addColumn
public void addColumn(Object columnName,
Object[] columnData)
-
Adds a column to the model. The new column will have the identifier columnName. columnData is the optional array of data for the column. If it is null the column is filled with null values. Otherwise, the new data will be added to model starting with the first element going to row 0, etc. This method will send a tableChanged notification message to all the listeners.
-
-
-
See Also:
-
addColumn(Object, Vector)
getRowCount
public int getRowCount()
-
Returns the number of rows in this data table.
-
-
Specified by:
-
getRowCount
in interface
TableModel
-
-
Returns:
-
the number of rows in the model
-
See Also:
-
TableModel.getColumnCount()
getColumnCount
public int getColumnCount()
-
Returns the number of columns in this data table.
-
-
Specified by:
-
getColumnCount
in interface
TableModel
-
-
Returns:
-
the number of columns in the model
-
See Also:
-
TableModel.getRowCount()
getColumnName
public String getColumnName(int column)
-
Returns the column name.
-
-
Specified by:
-
getColumnName
in interface
TableModel
-
Overrides:
-
getColumnName
in class
AbstractTableModel
-
-
Parameters:
-
column - the column being queried
-
Returns:
-
a name for this column using the string value of the appropriate member in columnIdentifiers. If columnIdentifiers does not have an entry for this index, returns the default name provided by the superclass
isCellEditable
public boolean isCellEditable(int row,
int column)
-
Returns true regardless of parameter values.
-
-
Specified by:
-
isCellEditable
in interface
TableModel
-
Overrides:
-
isCellEditable
in class
AbstractTableModel
-
-
Parameters:
-
row - the row whose value is to be queried
-
column - the column whose value is to be queried
-
Returns:
-
true
-
See Also:
-
setValueAt(java.lang.Object, int, int)
getValueAt
public Object getValueAt(int row,
int column)
-
Returns an attribute value for the cell at row and column.
-
-
Specified by:
-
getValueAt
in interface
TableModel
-
-
Parameters:
-
row - the row whose value is to be queried
-
column - the column whose value is to be queried
-
Returns:
-
the value Object at the specified cell
-
Throws:
-
ArrayIndexOutOfBoundsException
- if an invalid row or column was given
setValueAt
public void setValueAt(Object aValue,
int row,
int column)
-
Sets the object value for the cell at column and row. aValue is the new value. This method will generate a tableChanged notification.
-
-
Specified by:
-
setValueAt
in interface
TableModel
-
Overrides:
-
setValueAt
in class
AbstractTableModel
-
-
Parameters:
-
aValue - the new value; this can be null
-
row - the row whose value is to be changed
-
column - the column whose value is to be changed
-
Throws:
-
ArrayIndexOutOfBoundsException
- if an invalid row or column was given
-
See Also:
-
TableModel.getValueAt(int, int)
,
TableModel.isCellEditable(int, int)
convertToVector
protected static Vector convertToVector(Object[] anArray)
-
Returns a vector that contains the same objects as the array.
-
-
-
Parameters:
-
anArray - the array to be converted
-
Returns:
-
the new vector; if anArray is null, returns null
convertToVector
protected static Vector convertToVector(Object[][] anArray)
-
Returns a vector of vectors that contains the same objects as the array.
-
-
-
Parameters:
-
anArray - the double array to be converted
-
Returns:
-
the new vector of vectors; if anArray is null, returns null