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);   
  }   
}  
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);
  }
}