在JAVA-JESS中创建树

Question

我一直试图在JAVA-JESS做一棵树，但我对JESS的知识非常有限。由于我在编程方面表现不佳，我已经从不同的网站获得了帮助，并尝试在JAVA中编写该程序。任何人都可以帮我在JAVA.Jhan中提前在JESS编写程序。

import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeSelectionModel;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.filechooser.FileNameExtensionFilter;

import java.net.URL;
import java.util.Collection;
import java.util.Iterator;
import java.io.File;
import java.io.IOException;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class TreeView extends JPanel implements ActionListener {
    private JTree tree;
    JButton openButton, saveButton;
    JFileChooser fc;

    // Optionally set the look and feel.
    private static boolean useSystemLookAndFeel = false;

    public TreeView() {
        super(new GridLayout(1, 1));

        // Create a tree that allows one selection at a time.
        tree = new JTree();
        tree.getSelectionModel().setSelectionMode(
                TreeSelectionModel.SINGLE_TREE_SELECTION);

        // Create the scroll pane and add the tree to it.
        JScrollPane treeView = new JScrollPane(tree);

        add(treeView, BorderLayout.LINE_START);

        Dimension minimumSize = new Dimension(10, 0);
        treeView.setMinimumSize(minimumSize);

        fc = new JFileChooser();
        FileNameExtensionFilter filter = new FileNameExtensionFilter("xml",
                "XML");
        fc.setFileFilter(filter);
        openButton = new JButton("Open a File");
        openButton.addActionListener(this);

        // For layout purposes, put the buttons in a separate panel
        JPanel buttonPanel = new JPanel(); // use FlowLayout
        openButton.setPreferredSize(new Dimension(1, 1));

        // Add the buttons and the log to this panel.
        add(openButton, BorderLayout.LINE_END);
    }

    public void actionPerformed(ActionEvent e) {
        // Handle open button action.
        if (e.getSource() == openButton) {
            int returnVal = fc.showOpenDialog(TreeView.this);

            if (returnVal == JFileChooser.APPROVE_OPTION) {
                regenerateTree(fc.getSelectedFile());
            }

            // Handle save button action.
        } else if (e.getSource() == saveButton) {
            int returnVal = fc.showSaveDialog(TreeView.this);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                File file = fc.getSelectedFile();
            }
        }
    }

    private void regenerateTree(File file) {
        DistributionSystem ds = DSParser.parse(file);
        // Create the nodes.
        DefaultMutableTreeNode top = new DefaultMutableTreeNode(file.getName());
        createNodes(top, ds);
    }

    private void createNodes(DefaultMutableTreeNode top, DistributionSystem ds) {
        DefaultMutableTreeNode category = null;

        category = new DefaultMutableTreeNode("Voltage Levels");
        top.add(category);

        Collection<VoltageLevel> voltages = ds.getVoltages().values();
        for (Iterator iterator = voltages.iterator(); iterator.hasNext();) {
            // voltage levels
            VoltageLevel vl = (VoltageLevel) iterator.next();
            DefaultMutableTreeNode voltageLevel = new DefaultMutableTreeNode(
                    vl.getId());
            category.add(voltageLevel);

            // workstations
            Collection<Workstation> workstations = vl.getWorkstations();
            for (Iterator iterator2 = workstations.iterator(); iterator2
                    .hasNext();) {
                Workstation w = (Workstation) iterator2.next();

                DefaultMutableTreeNode workstationNode = new DefaultMutableTreeNode(
                        w.getId());
                voltageLevel.add(workstationNode);

                // bays
                Collection<Bay> bays = w.getBays();
                for (Iterator iterator3 = bays.iterator(); iterator3.hasNext();) {
                    Bay bay = (Bay) iterator3.next();

                    DefaultMutableTreeNode bayNode = new DefaultMutableTreeNode(
                            bay.getId());
                    workstationNode.add(bayNode);

                    // Bay Info
                    bayNode.add(new DefaultMutableTreeNode(bay
                            .getVoltageTransformer()));
                    bayNode.add(new DefaultMutableTreeNode(bay
                            .getCurrentTransformer()));

                }
            }

        }
        this.tree.setModel(new JTree(top).getModel());
    }

    /**
     * Create the GUI and show it. For thread safety, this method should be
     * invoked from the event dispatch thread.
     */
    private static void createAndShowGUI() {
        if (useSystemLookAndFeel) {
            try {
                UIManager.setLookAndFeel(UIManager
                        .getSystemLookAndFeelClassName());
            } catch (Exception e) {
                System.err.println("Couldn't use system look and feel.");
            }
        }

        // Create and set up the window.
        JFrame frame = new JFrame("Network visualization");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // Add content to the window.
        frame.add(new TreeView());

        // Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        // Schedule a job for the event dispatch thread:
        // creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}