我正在遵循我找到的一些代码(是的,我知道它是如何工作的)。 代码链接在此:Code Link
我想要做的是,如果单元格的值设置为“yellow”,则设置单元格的前景色。
这是我的代码:
public class Board extends JPanel{
private static final long serialVersionUID = 1L;
int boardHeight = 20;
int boardWidth = 10;
JTable table;
public Board() {
table = new JTable(this.boardHeight, this.boardWidth);
table.setDefaultRenderer(String.class, new BoardTableCellRenderer());
table.setFocusable(false);
table.setShowGrid(false);
table.setRowMargin(0);
table.setIntercellSpacing(new Dimension(0,0));
table.setRowSelectionAllowed(false);
table.setVisible(true);
this.add(table);
this.setPreferredSize(new Dimension(table.getPreferredSize().width, (table.getPreferredSize().height + 85)));
}
public void paint(Graphics g) {
table.setRowHeight(20);
for (int x = 0; x < this.table.getColumnCount(); ++x) {
TableColumn col = this.table.getColumnModel().getColumn(x);
col.setPreferredWidth(20);
}
}
}
还有单元格渲染器(Cell Renderer)
public class BoardTableCellRenderer extends DefaultTableCellRenderer {
private static final long serialVersionUID = 1L;
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,int row,int col) {
Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
String s = table.getModel().getValueAt(row, col).toString();
if (s.equalsIgnoreCase("yellow")) {
c.setForeground(Color.YELLOW);
}
else {
c.setForeground(Color.WHITE);
}
return c;
}
}
问题是,如果我将任何单元格的值设置为“黄色”,它都不会发生变化。
提前致谢!
Object.class
而不是String.class
来调用setDefaultRenderer()
。详情请参见此处:http://stackoverflow.com/a/19966915/1128689 - ToFi