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);  
  }  
}