我没优化代码,看看是不是符合你的意思
import javax.swing.*;
import javax.swing.tree.DefaultMutableTreeNode;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.util.Enumeration;public class TreeSave extends JFrame {
JTree tree;
DefaultMutableTreeNode root; public TreeSave() {
super();
setSize(300, 200);
root = new DefaultMutableTreeNode("root");
DefaultMutableTreeNode root1 = new DefaultMutableTreeNode("rot");
DefaultMutableTreeNode root2 = new DefaultMutableTreeNode("rt");
root.add(root1);
root1.add(root2);
tree = new JTree(root);
ActionListener action = new ActionListener() {
public void actionPerformed(ActionEvent ea) {
Enumeration e = root.breadthFirstEnumeration();
while (e.hasMoreElements()) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
if (node.getUserObject().equals("rt")) {//在这里你可以根据需要进行判断并保存
System.out.println("接点rt");
}
} }
};
JButton button = new JButton("save");
button.addActionListener(action);
getContentPane().add(button, BorderLayout.NORTH);
getContentPane().add(tree, BorderLayout.CENTER);
setVisible(true); } public static void main(String args[]) {
TreeSave ts = new TreeSave();
}
}
import javax.swing.*;
import javax.swing.tree.DefaultMutableTreeNode;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.util.Enumeration;public class TreeSave extends JFrame {
JTree tree;
DefaultMutableTreeNode root; public TreeSave() {
super();
setSize(300, 200);
root = new DefaultMutableTreeNode("root");
DefaultMutableTreeNode root1 = new DefaultMutableTreeNode("rot");
DefaultMutableTreeNode root2 = new DefaultMutableTreeNode("rt");
root.add(root1);
root1.add(root2);
tree = new JTree(root);
ActionListener action = new ActionListener() {
public void actionPerformed(ActionEvent ea) {
Enumeration e = root.breadthFirstEnumeration();
while (e.hasMoreElements()) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
if (node.getUserObject().equals("rt")) {//在这里你可以根据需要进行判断并保存
System.out.println("接点rt");
}
} }
};
JButton button = new JButton("save");
button.addActionListener(action);
getContentPane().add(button, BorderLayout.NORTH);
getContentPane().add(tree, BorderLayout.CENTER);
setVisible(true); } public static void main(String args[]) {
TreeSave ts = new TreeSave();
}
}
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