在JTable中添加3D效果

Question

我使用代码创建了一个JTable：

    List<String> visibleColumns = new ArrayList<String>();
    visibleColumns.add("Column 1");
    visibleColumns.add("Column 2");
    visibleColumns.add("Column 3");

    DefaultTableModel tableModel = new DefaultTableModel(visibleColumns.toArray(),100);
    JTable table = new JTable(tableModel);

    JPanel panel = new SwingPaneTable();
    panel.setBounds(0, 0, 280, 150);
    panel.setLayout(new BorderLayout());
    panel.add(table, BorderLayout.CENTER);
    panel.add(table.getTableHeader(), BorderLayout.NORTH);

    // Set Row Header
    JList<String> rowHeader = new JList<String>();
    rowHeader.setFixedCellWidth(18);
    rowHeader.setFixedCellHeight(18);
    rowHeader.setBackground(panel.getBackground());
    rowHeader.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
    JScrollPane scroll = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    scroll.setRowHeaderView(rowHeader);
    panel.add(scroll, BorderLayout.CENTER);

表格如下：

现在，我需要在我的桌子上添加这些效果：

有人知道我在这段代码中是怎么做到的吗？

Answer 1

你似乎要付出很多努力似乎并不需要（恕我直言）...

JScrollPane为您提供了向滚动窗格的每个角添加角点以及提供行和列标题的方法......

请参阅http://docs.oracle.com/javase/tutorial/uiswing/components/scrollpane.html

对于JTable，它会自动将JTableHeader应用于JScrollPane的列标题区域。

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.util.ArrayList;
import java.util.List;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ScrollPaneConstants;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.BevelBorder;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EtchedBorder;
import javax.swing.border.MatteBorder;
import javax.swing.table.DefaultTableModel;

public class TableExample {

    public static void main(String[] args) {
        new TableExample();
    }

    public TableExample() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                List<String> visibleColumns = new ArrayList<String>();
                visibleColumns.add("Column 1");
                visibleColumns.add("Column 2");
                visibleColumns.add("Column 3");

                DefaultTableModel tableModel = new DefaultTableModel(visibleColumns.toArray(), 100);
                JTable table = new JTable(tableModel);

                JScrollPane scroll = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
                table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

                JPanel left = new JPanel();
                left.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
                scroll.setCorner(ScrollPaneConstants.UPPER_LEFT_CORNER, left);

                JPanel right = new JPanel();
                right.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
                scroll.setCorner(ScrollPaneConstants.UPPER_RIGHT_CORNER, right);

                JPanel columnHeader = new JPanel() {
                    @Override
                    public Dimension getPreferredSize() {
                        JScrollBar sb = new JScrollBar(JScrollBar.VERTICAL);
                        return new Dimension(sb.getPreferredSize().width, 10);
                    }
                };
                columnHeader.setBorder(new CompoundBorder(
                        new MatteBorder(1, 1, 0, 0, Color.WHITE),
                        new MatteBorder(0, 0, 1, 1, Color.GRAY)
                ));
                scroll.setRowHeaderView(columnHeader);

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(scroll);
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

}