swing实现树形结构示例2枚

package test; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.JTree; import javax.swing.SpringLayout; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.DefaultTreeModel; import javax.swing.tree.TreePath; public class TreeMenu2 extends JFrame { private JTextField textField; private JTree tree; private SpringLayout springLayout; /** * Launch the application * @param args */ public static void main(String args[]) { EventQueue.invokeLater(new Runnable() { public void run() { try { TreeMenu2 frame = new TreeMenu2(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame */ public TreeMenu2() { super(); this.setTitle("维护企业架构"); springLayout = new SpringLayout(); getContentPane().setLayout(springLayout); setBounds(100, 100, 313, 485); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); tree = new JTree(); //getContentPane().add(tree); add(tree); springLayout.putConstraint(SpringLayout.SOUTH, tree, 310, SpringLayout.NORTH, getContentPane()); springLayout.putConstraint(SpringLayout.NORTH, tree, 25, SpringLayout.NORTH, getContentPane()); springLayout.putConstraint(SpringLayout.EAST, tree, 255, SpringLayout.WEST, getContentPane()); springLayout.putConstraint(SpringLayout.WEST, tree, 50, SpringLayout.WEST, getContentPane()); final JLabel label = new JLabel(); label.setText("名称："); getContentPane().add(label); springLayout.putConstraint(SpringLayout.WEST, label, 5, SpringLayout.WEST, getContentPane()); textField = new JTextField(); getContentPane().add(textField); springLayout.putConstraint(SpringLayout.NORTH, textField, 375, SpringLayout.NORTH, getContentPane()); final JButton btnadd = new JButton(); btnadd.setText("添加"); btnadd.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub DefaultMutableTreeNode addnode=new DefaultMutableTreeNode(textField.getText()); TreePath selpath=tree.getSelectionPath(); DefaultMutableTreeNode parentnode=(DefaultMutableTreeNode) selpath.getLastPathComponent(); DefaultTreeModel treeModel=new DefaultTreeModel(addnode); treeModel.insertNodeInto(addnode, parentnode, parentnode.getChildCount()); TreePath path=selpath.pathByAddingChild(addnode); if(!tree.isVisible(path)){ tree.makeVisible(path); } } }); getContentPane().add(btnadd); springLayout.putConstraint(SpringLayout.EAST, btnadd, 260, SpringLayout.WEST, getContentPane()); springLayout.putConstraint(SpringLayout.WEST, btnadd, 190, SpringLayout.WEST, getContentPane()); springLayout.putConstraint(SpringLayout.SOUTH, btnadd, 355, SpringLayout.NORTH, getContentPane()); final JButton btndel = new JButton(); btndel.setText("删除"); btndel.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub DefaultMutableTreeNode delnode=(DefaultMutableTreeNode) tree.getLastSelectedPathComponent();//选中欲删除的节点 if(!delnode.isRoot()){ DefaultMutableTreeNode nextselnode=delnode.getNextSibling(); if(nextselnode==null){ nextselnode=(DefaultMutableTreeNode) delnode.getParent(); } DefaultTreeModel deltreeModel=new DefaultTreeModel(delnode); deltreeModel.removeNodeFromParent(delnode); tree.setSelectionPath(new TreePath(nextselnode.getPath())); } } }); getContentPane().add(btndel); springLayout.putConstraint(SpringLayout.EAST, textField, -5, SpringLayout.WEST, btndel); springLayout.putConstraint(SpringLayout.WEST, textField, 5, SpringLayout.EAST, label); springLayout.putConstraint(SpringLayout.SOUTH, label, 0, SpringLayout.SOUTH, btndel); springLayout.putConstraint(SpringLayout.EAST, btndel, 0, SpringLayout.EAST, btnadd); springLayout.putConstraint(SpringLayout.WEST, btndel, 0, SpringLayout.WEST, btnadd); springLayout.putConstraint(SpringLayout.SOUTH, btndel, 395, SpringLayout.NORTH, getContentPane()); final JButton btnup = new JButton(); btnup.setText("修改"); btnup.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub TreePath selpath=tree.getSelectionPath(); DefaultMutableTreeNode upnode=(DefaultMutableTreeNode) selpath.getLastPathComponent(); upnode.setUserObject(textField.getText()); DefaultTreeModel uptreeModel=new DefaultTreeModel(upnode); uptreeModel.nodeChanged(upnode); tree.setSelectionPath(selpath); } }); getContentPane().add(btnup); springLayout.putConstraint(SpringLayout.EAST, btnup, 75, SpringLayout.EAST, textField); springLayout.putConstraint(SpringLayout.WEST, btnup, 5, SpringLayout.EAST, textField); springLayout.putConstraint(SpringLayout.NORTH, btnup, 405, SpringLayout.NORTH, getContentPane()); // } }