更改JTable中一行的背景颜色

一种方法是存储模型中每一行的当前颜色。这是一个固定在3列3行的简单模型：

static class MyTableModel extends DefaultTableModel {    List<Color> rowColours = Arrays.asList(        Color.RED,        Color.GREEN,        Color.CYAN    );    public void setRowColour(int row, Color c) {        rowColours.set(row, c);        fireTableRowsUpdated(row, row);    }    public Color getRowColour(int row) {        return rowColours.get(row);    }    @Override    public int getRowCount() {        return 3;    }    @Override    public int getColumnCount() {        return 3;    }    @Override    public Object getValueAt(int row, int column) {        return String.format("%d %d", row, column);    }}

注意

setRowColour

fireTableRowsUpdated

渲染器可以从表中获取模型：

static class MyTableCellRenderer extends DefaultTableCellRenderer {    @Override    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {        MyTableModel model = (MyTableModel) table.getModel();        Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);        c.setBackground(model.getRowColour(row));        return c;    }}

更改行的颜色很简单：

model.setRowColour(1, Color.YELLOW);