请问如何设置树中一个结点的图标?

Question

如何任意设置树中的结点图标?而不是仅仅设置打开,关闭,叶子结点三种图标

Answer 1

使用javax.swing.tree.DefaultTreeCellRenderer
http://blog.csdn.net/Unagain
我做的java实现的资源管理器，在FileTree.java中其中有这方面的代码。

Answer 2

code:
------------------
package Main;import java.awt.Component;
import java.awt.Graphics;import javax.swing.ImageIcon;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;public class CustomCellRenderer extends DefaultTreeCellRenderer{

/**
 * 
 */
private static final long serialVersionUID = 1L;
private ImageIcon componentImage[] = new ImageIcon[3];

public CustomCellRenderer(){

componentImage[0] = new ImageIcon(JReport.getImagePath()+"object.gif");

componentImage[1] = new ImageIcon(JReport.getImagePath()+"band.gif");

componentImage[2] = new ImageIcon(JReport.getImagePath()+"component.gif");
}

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

super.getTreeCellRendererComponent(tree, value,selected, expanded, leaf, row, hasFocus);

DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
//System.out.println(((JTreeObject)node.getUserObject()).getComponentType());

switch(node.getLevel() )
     {
       case 0 : this.setIcon(componentImage[0]);
           break;
       case 1 : this.setIcon(componentImage[1]);
           break;
       case 2 : this.setIcon(componentImage[2]);
           break;      }

return this;
}

public void paint( Graphics g ){

g.fillRect( 0, 0, getWidth() - 1, getHeight() - 1 ); super.paint( g ); }
}