Swing之JTable篇如何在表头中增加图片

import java.awt.BorderLayout;
import java.awt.Component;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

class JComponentTableCellRenderer implements TableCellRenderer {
  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
      boolean hasFocus, int row, int column) {
    return (JComponent) value;
  }
}

public class LabelHeaderSample {
  public static void main(String args[]) {
    final Object rows[][] = { { "one", "1" }, { "two", "2" }, { "three", "3" } };
    JFrame frame = new JFrame("Label Header");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    String headers[] = { "English", "#" };
    JTable table = new JTable(rows, headers);
    JScrollPane scrollPane = new JScrollPane(table);

    //创建需要增加的图片对象
    Icon redIcon = new ImageIcon("yourFile.gif");
    Icon blueIcon = new ImageIcon("yourFile.gif");

    Border headerBorder = UIManager.getBorder("TableHeader.cellBorder");

    JLabel blueLabel = new JLabel(headers[0], blueIcon, JLabel.CENTER);
    blueLabel.setBorder(headerBorder);
    JLabel redLabel = new JLabel(headers[1], redIcon, JLabel.CENTER);
    redLabel.setBorder(headerBorder);

    //获得表单元个渲染器
    TableCellRenderer renderer = new JComponentTableCellRenderer();

    //获得表列模式
    TableColumnModel columnModel = table.getColumnModel();

    //获得需要增加图片的列对象
    TableColumn column0 = columnModel.getColumn(0);
    TableColumn column1 = columnModel.getColumn(1);

    //将用于绘制 TableColumn 的头的 TableCellRenderer 设置为 renderer。
    column0.setHeaderRenderer(renderer);
    
    //设置 Object，将使用其字符串表示形式作为 headerRenderer 的值。
    column0.setHeaderValue(blueLabel);

    column1.setHeaderRenderer(renderer);
    column1.setHeaderValue(redLabel);

    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}