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  1. /*
  2.  * To change this license header, choose License Headers in Project Properties.
  3.  * To change this template file, choose Tools | Templates
  4.  * and open the template in the editor.
  5.  */
  6. package grilvcu.view;
  7.  
  8. import java.awt.BorderLayout;
  9. import java.awt.Dimension;
  10. import java.awt.event.MouseEvent;
  11. import java.awt.event.MouseListener;
  12. import javax.swing.JFrame;
  13. import javax.swing.JOptionPane;
  14. import javax.swing.JPanel;
  15. import javax.swing.JScrollPane;
  16. import javax.swing.JSplitPane;
  17. import javax.swing.JTree;
  18. import javax.swing.tree.DefaultMutableTreeNode;
  19.  
  20. /**
  21.  *
  22.  * @author I'msimple
  23.  */
  24. public class DemoJTree {
  25.  
  26.     JFrame frame;
  27.     JPanel jpnTree;
  28.     JPanel jpnTree00;
  29.     JSplitPane jsplit;
  30.     DefaultMutableTreeNode root = null;
  31.     JTree tree;
  32.     JScrollPane jsc;
  33.  
  34.  
  35.  
  36.     public DemoJTree(String text) {
  37.  
  38.         initContainer();
  39.  
  40.         initComponent();
  41.  
  42. //        setAction();
  43.         frame.setTitle(text);
  44.         frame.setVisible(true);
  45.     }
  46.  
  47.     private void setAction() {
  48.  
  49.         tree.addMouseListener(new MouseListener() {
  50.             @Override
  51.             public void mouseClicked(MouseEvent e) {
  52.                 //getLastSelectedPathComponent chính la node tren giao dien duoc chon
  53.                 Object obt = tree.getLastSelectedPathComponent();
  54.  
  55.                 DefaultMutableTreeNode node = (DefaultMutableTreeNode) obt;
  56.                 JOptionPane.showMessageDialog(null,node.getUserObject());
  57.  
  58.             }
  59.  
  60.             @Override
  61.             public void mousePressed(MouseEvent e) {
  62.                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
  63.             }
  64.  
  65.             @Override
  66.             public void mouseReleased(MouseEvent e) {
  67.                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
  68.             }
  69.  
  70.             @Override
  71.             public void mouseEntered(MouseEvent e) {
  72.                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
  73.             }
  74.  
  75.             @Override
  76.             public void mouseExited(MouseEvent e) {
  77.                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
  78.             }
  79.         });
  80.  
  81.  
  82.     }
  83.     private void initContainer() {
  84.           frame = new JFrame();
  85.         frame.setLayout(new BorderLayout());
  86.         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  87.         frame.setSize(400,600);
  88.         frame.setLocationRelativeTo(null);
  89.     }
  90.  
  91.     private void initComponent() {
  92.         //Tao jtree
  93.         jpnTree = new JPanel(new BorderLayout());
  94.         jpnTree00 = new JPanel();
  95.         jpnTree.setPreferredSize(new Dimension(300, 0));
  96.  
  97.  
  98.         //Tao danh sach cho jtree bang TreeNode , treeNode cha la root
  99.         root = new DefaultMutableTreeNode("Boy TMU");
  100.         //Tao treenote con cua root
  101.         DefaultMutableTreeNode phtgv = new DefaultMutableTreeNode("Phong hop tac giang vien");
  102.         root.add(phtgv);
  103.         DefaultMutableTreeNode phkd = new DefaultMutableTreeNode("Phong kinh doanh");
  104.         root.add(phkd);
  105.         DefaultMutableTreeNode phkt = new DefaultMutableTreeNode("Phong ke toan");
  106.         root.add(phkt);
  107.         DefaultMutableTreeNode phctsv = new DefaultMutableTreeNode("Phong cong tac sinh vien");
  108.         root.add(phctsv);
  109.        //Tao cac nhan vien trong phong
  110.        DefaultMutableTreeNode nv00 = new DefaultMutableTreeNode("Nguyen Van A");
  111.        phtgv.add(nv00);
  112.  
  113.  
  114.  
  115.  
  116.  
  117.  
  118.         tree = new JTree(root);
  119.         tree.expandRow(0);
  120.  
  121.  
  122.         jsc = new JScrollPane(tree,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
  123.         jpnTree.add(jsc,BorderLayout.CENTER);
  124.  
  125.  
  126.  
  127.         //Chung ta them jtree vao mot jsplit
  128.  
  129.         jsplit = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,jpnTree,jpnTree00);
  130.         jsplit.setOneTouchExpandable(true);
  131.  
  132.  
  133.         frame.add(jsplit,BorderLayout.CENTER);
  134.  
  135.  
  136.  
  137.  
  138.  
  139.      }
  140.  
  141.  
  142.    public static void main(String[] args) {
  143.         new DemoJTree("JTREE");
  144.     }
  145.  
  146. }
  147.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:24: error: class DemoJTree is public, should be declared in a file named DemoJTree.java
public class DemoJTree {
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/bFul3C
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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