如何从java中的JTree中删除每个节点前面的文件夹符号

我试图从JTree的节点中删除默认情况下的文件夹符号。 我怎么能做到这一点？

Answer 1

仅供参考，这是一个完整的例子：

import java.awt.Component; import java.awt.EventQueue; import java.awt.Graphics; import javax.swing.Icon; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.UIManager; /** @see http://stackoverflow.com/questions/5260223 */ public class JTreeLite { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { //@Override public void run() { createGUI(); } }); } private static void createGUI() { final JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Icon empty = new TreeIcon(); UIManager.put("Tree.closedIcon", empty); UIManager.put("Tree.openIcon", empty); UIManager.put("Tree.collapsedIcon", empty); UIManager.put("Tree.expandedIcon", empty); UIManager.put("Tree.leafIcon", empty); JTree jt = new JTree(); frame.add(jt); frame.pack(); frame.setSize(300, 400); frame.setVisible(true); } } class TreeIcon implements Icon { private static int SIZE = 0; public TreeIcon() { } public int getIconWidth() { return SIZE; } public int getIconHeight() { return SIZE; } public void paintIcon(Component c, Graphics g, int x, int y) { System.out.println(c.getWidth() + " " + c.getHeight() + " " + x + " " + y); } } 

Answer 2

Swing教程专门讲述了这样做：

http://download.oracle.com/javase/tutorial/uiswing/components/tree.html#display

您可以轻松更改用于叶，扩展分支或折叠分支节点的默认图标。 为此，首先要创建DefaultTreeCellRenderer的实例。

Answer 3

 DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) jTree.getCellRenderer(); renderer.setLeafIcon(null); renderer.setClosedIcon(null); renderer.setOpenIcon(null); 

jtree使用CellRender，例如DefaultTreeCellRenderer，您可以使用dasable或更改默认节点图标。 此外，您可以创建自定义cellRender并为您的图标方案定义更多难以理解的逻辑。

 tree.setCellRenderer(new DefaultTreeCellRenderer() { @Override public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) { JLabel component = (JLabel) super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus); ImageIcon iconPath = ((WizardNode) value).getIcon(); component.setIcon(iconPath); return this; } });