java 实现二叉树的可视化

public class BrinaryTree extends javax.swing.JFrame {    /** Creates new form BrinaryTree */    CreatNodes root;    public BrinaryTree() {        initComponents();      DefaultMutableTreeNode dmt=new DefaultMutableTreeNode(50);        ((DefaultTreeModel)jTree1.getModel()).setRoot(dmt);       root=new CreatNodes(50,dmt);         for(int i=1;i<Math.pow(2, 7);i++)         {         root.InsertTree(i,root);         root.InsertTree(i-5,root);        }          //TreeNode rootnode=dmt;         //JTree  tree = new JTree(rootnode);       //  setViewportView(tree);    }      @SuppressWarnings("unchecked")    // <editor-fold defaultstate="collapsed" desc="Generated Code">                              private void initComponents() {        JFrame = new javax.swing.JScrollPane();        jTree1 = new javax.swing.JTree();        OKbutton = new javax.swing.JButton();        tempTextField = new javax.swing.JTextField();        OKlabel = new javax.swing.JLabel();        jLabel1 = new javax.swing.JLabel();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        jTree1.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));        JFrame.setViewportView(jTree1);        OKbutton.setText("确定");        OKbutton.addMouseListener(new java.awt.event.MouseAdapter() {            public void mouseClicked(java.awt.event.MouseEvent evt) {                OKbuttonMouseClicked(evt);            }        });        OKbutton.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                OKbuttonActionPerformed(evt);            }        });        tempTextField.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                tempTextFieldActionPerformed(evt);            }        });        OKlabel.setText("点击显示结点");        jLabel1.setText("jLabel1");        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());        getContentPane().setLayout(layout);        layout.setHorizontalGroup(            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)            .addGroup(layout.createSequentialGroup()                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)                    .addGroup(layout.createSequentialGroup()                        .addContainerGap()                        .addComponent(JFrame, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE))                    .addGroup(layout.createSequentialGroup()                        .addGap(36, 36, 36)                        .addComponent(tempTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 106, javax.swing.GroupLayout.PREFERRED_SIZE)                        .addGap(50, 50, 50)                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)                            .addComponent(OKlabel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)                            .addComponent(OKbutton, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))                        .addGap(27, 27, 27)                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 91, javax.swing.GroupLayout.PREFERRED_SIZE)))                .addContainerGap())        );        layout.setVerticalGroup(            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)            .addGroup(layout.createSequentialGroup()                .addComponent(JFrame, javax.swing.GroupLayout.PREFERRED_SIZE, 229, javax.swing.GroupLayout.PREFERRED_SIZE)                .addGap(17, 17, 17)                .addComponent(OKlabel, javax.swing.GroupLayout.PREFERRED_SIZE, 27, javax.swing.GroupLayout.PREFERRED_SIZE)                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)                    .addComponent(OKbutton, javax.swing.GroupLayout.PREFERRED_SIZE, 27, javax.swing.GroupLayout.PREFERRED_SIZE)                    .addComponent(tempTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                    .addComponent(jLabel1))                .addContainerGap(20, Short.MAX_VALUE))        );        pack();    }// </editor-fold>                        class CreatNodes{    int data;    CreatNodes lefttree;    CreatNodes righttree;    DefaultMutableTreeNode parent  ;    CreatNodes(int data, DefaultMutableTreeNode dmt)    {        this.data=data;        this.parent=dmt;        this.lefttree=null;        this.righttree=null;    }    public void InsertTree(int data,CreatNodes root)    {    //DefaultMutableTreeNode dmt1=new DefaultMutableTreeNode(1);    //parent.add(dmt1);    //DefaultMutableTreeNode dmt2=new DefaultMutableTreeNode(2);    //dmt1.add(dmt2);     if(data>=root.data)     {         if(root.righttree==null)         {             DefaultMutableTreeNode son=new DefaultMutableTreeNode(data);             root.parent.add(son);              root.righttree=new CreatNodes(data,son);         }        else        {             InsertTree(data,root.righttree);        }     }    else    {         if(root.lefttree==null)         {             DefaultMutableTreeNode son=new DefaultMutableTreeNode(data);             root.parent.add(son);             root.lefttree=new CreatNodes(data,son);         }        else        {            InsertTree(data,root.lefttree);        }    }}       CreatNodes searchnode(int key)       {        return searchnode( root,key);       }       CreatNodes searchnode(CreatNodes node ,int key)       {          if(node==null)          {              return null;          }          else if(node.data==key)          {              return node;          } else   if(key>node.data)          {          return searchnode(node.righttree,key); } else return searchnode(node.lefttree,key);       }}    private void OKbuttonActionPerformed(java.awt.event.ActionEvent evt) {                                                 // TODO add your handling code here:        int findnode = (int)(Double.parseDouble(tempTextField.getText()));                   OKlabel.setText("要查找的结点"+findnode);             CreatNodes searchfindnode=root.searchnode(findnode);       if(searchfindnode==null)       {           OKlabel.setText("没找到"+findnode);       } else{       TreePath Path = new TreePath(((DefaultTreeModel)jTree1.getModel()).getPathToRoot(searchfindnode.parent));       jTree1.makeVisible(Path);       jTree1.addSelectionPath(Path);        }    }                                            private void tempTextFieldActionPerformed(java.awt.event.ActionEvent evt) {                                                      // TODO add your handling code here:     //DefaultMutableTreeNode selectedNode//= (DefaultMutableTreeNode )tree.getLastSelectedPathComponent();    }                                                 private void OKbuttonMouseClicked(java.awt.event.MouseEvent evt) {                                              // TODO add your handling code here:    }                                         /**    * @param args the command line arguments    */    public static void main(String args[]) {        java.awt.EventQueue.invokeLater(new Runnable() {            public void run() {                new BrinaryTree().setVisible(true);            }        });        //TextField msg=new TextField();          }    // Variables declaration - do not modify                         private javax.swing.JScrollPane JFrame;    private javax.swing.JButton OKbutton;    private javax.swing.JLabel OKlabel;    private javax.swing.JLabel jLabel1;    private javax.swing.JTree jTree1;    private javax.swing.JTextField tempTextField;    // End of variables declaration                   }

这是运行之后的效果图，可以输入节点名称进行查找，树形结构也比较明确。