JTable 表头背景颜色
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【中文标题】JTable 表头背景颜色【英文标题】：JTable header background color 【发布时间】：2022-01-24 03:11:39 【问题描述】：我正在尝试在 JTable 标题上添加背景颜色，但它似乎不会改变标题的颜色这是我的 JTable 代码.. 我做错了什么？
Color headerColor = new Color(25, 78, 132);
itemTable = new JTable()
public boolean isCellEditable(int row, int column)
return false;
;
Color rowColor1 = new Color(99, 154, 206);
Color rowColor2 = new Color(148, 186, 231);
public Component prepareRenderer(TableCellRenderer renderer, int row, int column)
Component stamp = super.prepareRenderer(renderer, row, column);
if (row % 2 == 0)
stamp.setBackground(rowColor1);
else
stamp.setBackground(rowColor2);
return stamp;
;
JTableHeader Header = itemTable.getTableHeader();
Header.setBackground(headerColor);
Header.setReorderingAllowed(false);
itemTable.setFont(fpanelItemTable);
itemTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
//itemTable.setPreferredScrollableViewportSize(new Dimension(200,200));
//itemTable.setFillsViewportHeight(true);
itemTable.setAutoCreateRowSorter(true);
【问题讨论】：
注意 prepareRenderer 不适合这项工作 我应该把它放在哪里？我希望我的标题和行有颜色 【参考方案1】：例如，三种可能的方式之一我应该把它放在哪里？我希望我的标题和行有颜色
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
public class SelectedTableHeader
private JFrame frame = new JFrame("Table Demo");
private JTableHeader header;
private Object selectedColumn = null;
private String[] columnNames = "String", "Integer", "Float", "Double", "Locale & Double", "Boolean";
private Object[][] data =
"aaa", new Integer(12), new Float(12.15), new Double(100.05), new Double(12.05), true,
"bbb", new Integer(5), new Float(7.154), new Double(6.1555), new Double(417.55), false,
"CCC", new Integer(92), new Float(0.1135), new Double(3.1455), new Double(11.05), true,
"ddd", new Integer(12), new Float(31.15), new Double(10.05), new Double(23.05), true,
"eee", new Integer(5), new Float(5.154), new Double(16.1555), new Double(17.55), false,
"fff", new Integer(92), new Float(4.1135), new Double(31.1455), new Double(3.05), true;
private TableModel model = new DefaultTableModel(data, columnNames)
private static final long serialVersionUID = 1L;
@Override
public Class<?> getColumnClass(int column)
return getValueAt(0, column).getClass();
;
private JTable table = new JTable(model)
private static final long serialVersionUID = 1L;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column)
Component c = super.prepareRenderer(renderer, row, column);
int firstRow = 0;
int secondRow = 0;
int lastRow = table.getRowCount() - 1;
if (row == lastRow)
((JComponent) c).setBackground(Color.GREEN);
else if (row == firstRow)
((JComponent) c).setBackground(Color.YELLOW);
else
((JComponent) c).setBackground(table.getBackground());
return c;
;
public SelectedTableHeader()
header = table.getTableHeader();
header.addMouseListener(new MouseAdapter()
@Override
public void mouseClicked(MouseEvent e)
JTableHeader h = (JTableHeader) e.getSource();
int i = h.columnAtPoint(e.getPoint());
Object o = h.getColumnModel().getColumn(i).getHeaderValue();
if (i < 0)
selectedColumn = null;
return;
selectedColumn = o;
h.requestFocusInWindow();
);
final TableCellRenderer hr = table.getTableHeader().getDefaultRenderer();
header.setDefaultRenderer(new TableCellRenderer()
private JLabel lbl;
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column)
if (selectedColumn == value)
lbl = (JLabel) hr.getTableCellRendererComponent(table, value,
true, true, row, column);
lbl.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createEmptyBorder(1, 1, 1, 1),
BorderFactory.createLineBorder(Color.red, 1)));
lbl.setHorizontalAlignment(SwingConstants.LEFT);
lbl.setBackground(lbl.getBackground());
else
lbl = (JLabel) hr.getTableCellRendererComponent(table, value,
false, false, row, column);
lbl.setBorder(BorderFactory.createCompoundBorder(
lbl.getBorder(),
BorderFactory.createEmptyBorder(1, 1, 1, 1)));
lbl.setHorizontalAlignment(SwingConstants.CENTER);
lbl.setBackground(Color.ORANGE);
if (column == 0)
lbl.setForeground(Color.red);
else
lbl.setForeground(header.getForeground());
/*return (value == selectedColumn) ? hr.getTableCellRendererComponent(
table, value, true, true, row, column) : hr.getTableCellRendererComponent(
table, value, false, false, row, column);*/
return lbl;
);
table.setRowHeight(20);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scroll = new JScrollPane(table);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(scroll);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
public static void main(String[] args)
EventQueue.invokeLater(new Runnable()
@Override
public void run()
SelectedTableHeader sTH = new SelectedTableHeader();
);
【讨论】：
谢谢你。所以我应该将单元格和标题渲染器分开，对吗？我还有一个问题，为什么当我在标题上涂上颜色时，双头箭头不可见？我怎样才能让它再次可见？cell and header renderer am I right? ---> 是的，why is the double head arrow is not visible when there I put color on the header? ---> 请问是什么？？？不知道没有细节......，你的意思是排序图标还是???
是的。当标题没有颜色时，排序图标或双头箭头可见，然后当标题有颜色时，图标不会出现..为什么？以上是关于JTable 表头背景颜色的主要内容，如果未能解决你的问题，请参考以下文章