TreeCellRendererを試す

import java.util.*;

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.tree.*;

/**
* $Id: TreeCellRenderer.html,v 1.1 2009/06/22 16:12:01 kishi Exp kishi $
*/

public class MyTest extends JFrame implements TreeCellRenderer {

    public Component getTreeCellRendererComponent(
        JTree tree , Object value , boolean selected ,
        boolean expanded , boolean leaf , int row , boolean hasFocus
    ) {

        String text = value.toString();
        JLabel label = new JLabel( text );
        if ( leaf ) {
            if ( text.contains( "(MALE)" ) ) {
                label.setIcon( new ImageIcon( "male.gif" ) );
            }
            if ( text.contains( "(FEMALE)" ) ) {
                label.setIcon( new ImageIcon( "female.gif" ) );
            }

            if ( selected )
                label.setForeground( Color.RED );
        }
        return label;
    }

    public MyTest() {

        JPanel mainPanel = new JPanel();

        String arr[] = {
                           "山田太郎(MALE)", "小島裕子(FEMALE)" , "鶴岡正義(MALE)"
                       };

        Hashtable node = new Hashtable();
        node.put( "メンバー" , arr );

        JTree tree = new JTree( node );
        tree.setCellRenderer( this );

        // スクロールするペインを追加
        JScrollPane scrPane = new JScrollPane();
        scrPane.getViewport().setView( tree );
        scrPane.setPreferredSize( new Dimension( 360, 480 ) );

        mainPanel.add( scrPane );

        // コンテナに各パネルを配置
        Container container = this.getContentPane();
        container.add( mainPanel, BorderLayout.CENTER );

    }

    public static void main( String[] args ) {
        /* 自分自身を作成 */
        MyTest viewer = new MyTest();

        /* 終了処理を追加 */
        viewer.addWindowListener( new WindowAdapter() {
                                      public void windowClosing( WindowEvent e ) {
                                          System.exit( 0 );
                                      }
                                  }
                                );

        /* サイズと位置を指定 */
        viewer.setBounds( 10, 10, 400, 600 );

        /* 実際に表示する */
        viewer.setTitle( "TreeCellRendererを試す" );
        viewer.setVisible( true );
    }

}