LoadTree() 2 { jTabbedPane1.setCloseButtonEnabled(true); 5 6 DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("软件部"); 7 node1.add(new DefaultMutableTreeNode("产品部")); 8 node1.add(new DefaultMutableTreeNode("测试部")); 9 node1.add(new DefaultMutableTreeNode("设计部")); 10 11 DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("销售部"); 12 node2.add(new DefaultMutableTreeNode("jack")); 13 node2.add(new DefaultMutableTreeNode("Lily")); 14 node2.add(new DefaultMutableTreeNode("Smith")); 15 16 DefaultMutableTreeNode top = new DefaultMutableTreeNode("职员管理"); top.add(new DefaultMutableTreeNode("总经理")); 20 top.add(node1); 21 top.add(node2); DefaultTreeModel model = new DefaultTreeModel (top); 25 this.jTree1.setModel(model); 26 //jTree1.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION) { 31 Image icon= ImageIO.read(this.getClass().getResource("/images/Icon.png")); 32 tabIcon = createImageIcon("/images/Icon.png", "tab icon"); .setIconImage(icon); 35 } 36 catch(IOException ex) 37 { 38 39 System.out.println(ex); 40 41 } 42 43 }

 在Tree的值变化事件中,通过class.forName()和 cls.newInstance()反射动态实例化窗体,代码如下:

jTree1ValueChanged(javax.swing.event.TreeSelectionEvent evt) { DefaultMutableTreeNode node = (DefaultMutableTreeNode)
　　　　　　　　jTree1.getLastSelectedPathComponent(); (node == null){ ; 9 } 10 11 Object nodeInfo = node.getUserObject(); 12 String item = (String) nodeInfo; (node.isLeaf()) { 15 String item1 = (String) nodeInfo; 16 // this.setTitle(item1); 17 //File f = new File("client.jar"); 18 //URLClassLoader cl = new URLClassLoader(new URL[]{f.toURI().toURL(), null}); 19 //Class<?> clazz = cl.loadClass("epicurus.Client"); 20 //Method main = clazz.getMethod("main", String[].class); { 23 Class cls = Class.forName("com.mkmis.forms.JIFrame1"); 24 javax.swing.JInternalFrame frm =
　　　　　　　　　　　　　　　　(javax.swing.JInternalFrame) cls.newInstance(); 25 frm.setVisible(true); jTabbedPane1.addTab(" "+item1+" ",this.tabIcon,frm); 29 30 } 31 catch (Throwable e) { 32 System.err.println(e); 33 } 34 } else { 35 System.out.println("not leaf"); 36 } 37 }

 在javaswing中的路径也和net不同,下面定义了一个创建ImageIcon的方法:

ImageIcon createImageIcon(String path,String description) { 3 java.net.URL imgURL = getClass().getResource(path); 4 if (imgURL != null) { ImageIcon(imgURL, description); 6 } else { 7 System.err.println("Couldn't find file: " + path); ; 9 } 10 }

 5 JDBC MYSQL代码