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);  }}