JTable标题背景颜色

我正在尝试将背景颜色放在JTable标题上，但它似乎没有改变标题的颜色这是我的JTable的代码..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); 

Answer 1

我应该把它放在哪里？ 我希望我的标题和行有颜色

• 例如，三种可能的方式之一

 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(); } }); } }