java - JTable - 触发列数据更改事件

Question

我想触发一个事件，该事件表示给定的列值已全部更改，即在 X 列的某处，某些值已更改。我该怎么做，因为所有事件都涉及单元格、行或整个数据表......

Answer 1

查看AbstractTableModel，看起来像TableModelEvent明确地构造一个可能会成功：

model.fireTableChanged(new TableModelEvent(model, 0, lastRow, columnIndex,
                       TableModelEvent.UPDATE));

另请参阅 javadoc TableModelEvent：

/**
 * Depending on the parameters used in the constructors, the TableModelevent
 * can be used to specify the following types of changes: <p>
 *
 * <pre>
 * TableModelEvent(source);              //  The data, ie. all rows changed 
 * TableModelEvent(source, HEADER_ROW);  //  Structure change, reallocate TableColumns
 * TableModelEvent(source, 1);           //  Row 1 changed
 * TableModelEvent(source, 3, 6);        //  Rows 3 to 6 inclusive changed
 * TableModelEvent(source, 2, 2, 6);     //  Cell at (2, 6) changed
 * TableModelEvent(source, 3, 6, ALL_COLUMNS, INSERT); // Rows (3, 6) were inserted
 * TableModelEvent(source, 3, 6, ALL_COLUMNS, DELETE); // Rows (3, 6) were deleted
 * </pre>
 *
 * It is possible to use other combinations of the parameters, not all of them 
 * are meaningful. (...)

Answer 2

就我个人而言，如果只是为了指示表需要刷新，我会触发一个事件来说明整个表已更改。