你可以把这个节点先remove然后再加入一个。
再一个方法就是,你在节点上不加入字符,直接加一个对象。例
String one="根节点";
String two="第一节点";
DefaultMutableNode root = new DefaultMutableNode(one);
DefaultMutableNode tnd = new DefaultMutableNode(two);
JTree tree = new JTree( root );这样你以后只要修改two的值就可以修改树上显示的字符。说一下,树上显示是你的类中的toString 方法返回的值。
再一个方法就是,你在节点上不加入字符,直接加一个对象。例
String one="根节点";
String two="第一节点";
DefaultMutableNode root = new DefaultMutableNode(one);
DefaultMutableNode tnd = new DefaultMutableNode(two);
JTree tree = new JTree( root );这样你以后只要修改two的值就可以修改树上显示的字符。说一下,树上显示是你的类中的toString 方法返回的值。
package yagumo.LayerOut.A;import java.awt.*;
import javax.swing.*;
import java.awt.Rectangle;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeSelectionModel;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.tree.*;/**
* <p>Title: 八云测试用例</p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2005</p>
*
* <p>Company: </p>
*
* @author yagumo
* @version 1.0
*/
public class ChangeNodeName extends JFrame {
public ChangeNodeName() {
try {
jbInit();
}
catch (Exception exception) {
exception.printStackTrace();
}
} private void jbInit() throws Exception {
getContentPane().setLayout(null);
jTree1.setBounds(new Rectangle(54, 42, 289, 99));
jButton1.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
TreePath treePath = jTree1.getSelectionPath();
DefaultMutableTreeNode node = (DefaultMutableTreeNode) treePath.getLastPathComponent();
//改名
node.setUserObject("123");
DefaultTreeModel treeModel = (DefaultTreeModel) jTree1.getModel();
//刷新
treeModel.reload();
//重置选择支
jTree1.setSelectionPath(treePath);
}
});
this.getContentPane().add(jButton1);
this.getContentPane().add(jTree1);
jButton1.setBounds(new Rectangle(162, 178, 71, 25));
jButton1.setText("jButton1");
} public static void main(String[] args) {
ChangeNodeName changenodename = new ChangeNodeName();
changenodename.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
changenodename.setSize(400, 300);
changenodename.show();
}
/**
* 生成JTreePath树型结构
* @return JTree
*/
private JTree getJTreePath() {
DefaultMutableTreeNode nodeTop = new DefaultMutableTreeNode("PeiGet");
DefaultMutableTreeNode nodeDownloading = new DefaultMutableTreeNode("正在下载");
nodeTop.add(nodeDownloading); JTree jTree = new JTree(nodeTop);
jTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
return jTree;
}
JTree jTree1 = getJTreePath();
JButton jButton1 = new JButton();
}
重来个按钮事件处理过程:
jButton1.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) jTree1.getSelectionPath().getLastPathComponent();
//改名
node.setUserObject("123");
//刷新
jTree1.updateUI();
}
});