Java模仿系统的目录，有人做过吗

mse65042 2011-08-24 07:54:08

Java模仿系统的目录，有人做过吗

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luohuijun619 2011-08-24

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在分享几个

http://mxdxm.iteye.com/blog/966736

http://www.iteye.com/topic/1105671

学习下吧

luohuijun619 2011-08-24

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用jtree实现

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.tree.*;



public class JTreeDemo1 implements TreeModelListener{



	JLabel label = null;

	String nodeName = null;//原有節點名稱

	public JTreeDemo1(){

		JFrame jf = new JFrame("JTreeDemo1");

		Container contentPane = jf.getContentPane();

		

		DefaultMutableTreeNode root = new DefaultMutableTreeNode("資源管理器");

		DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("我的公文包");

		DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("我的電腦");

		DefaultMutableTreeNode node3 = new DefaultMutableTreeNode("收藏夾");

		DefaultMutableTreeNode node4 = new DefaultMutableTreeNode("Readme");

		root.add(node1);

		root.add(node2);

		root.add(node3);

		root.add(node4);

		

		DefaultMutableTreeNode leafnode = new DefaultMutableTreeNode("公司文件");

		node1.add(leafnode);

		leafnode = new DefaultMutableTreeNode("私人文件");

		node1.add(leafnode);

		

		leafnode = new DefaultMutableTreeNode("本機磁盤C");

		node2.add(leafnode);

		leafnode = new DefaultMutableTreeNode("本機磁盤D");

		node2.add(leafnode);

		leafnode = new DefaultMutableTreeNode("本機磁盤E");

		node2.add(leafnode);



		leafnode = new DefaultMutableTreeNode("網站列表");

		node3.add(leafnode);

		leafnode = new DefaultMutableTreeNode("奇摩站");

		node3.add(leafnode);

		leafnode = new DefaultMutableTreeNode("網絡書店");

		node3.add(leafnode);

		

		JTree tree = new JTree(root);

		tree.setEditable(true);//設置樹可編輯

		tree.addMouseListener(new MouseHandle());

		DefaultTreeModel treeModel = (DefaultTreeModel)tree.getModel();

		treeModel.addTreeModelListener(this);

		

		JScrollPane scrollPane = new JScrollPane();

		scrollPane.getViewport().add(tree);

		//scrollPane.setViewportview(tree);

		

		label = new JLabel("更改數據為：");

		contentPane.add(scrollPane,BorderLayout.CENTER);

		contentPane.add(label,BorderLayout.SOUTH);

		jf.pack();

		jf.setVisible(true);

		jf.addWindowListener(new WindowAdapter(){

			@Override

			public void windowClosing(WindowEvent e){

				System.exit(0);

			}

		});

	}

	@Override

	public void treeNodesChanged(TreeModelEvent e){

		TreePath treePath = e.getTreePath();

		DefaultMutableTreeNode node = (DefaultMutableTreeNode)treePath.getLastPathComponent();//獲取樹枝節點

		System.out.println("node:"+node);

		try{

			int[] index = e.getChildIndices();

			System.out.println("枚舉子節點");

			for(int i=0;i<index.length;i++){

				System.out.println(index[i]);

			}

			node = (DefaultMutableTreeNode)node.getChildAt(index[0]);

			System.out.println("node:"+node);

		}catch(NullPointerException ne){

			label.setText("發生空指針異常");

		}

		label.setText(nodeName+"更改數據為："+(String)node.getUserObject());

	}

	@Override

	public void treeNodesInserted(TreeModelEvent e){

		

	}

	@Override

	public void treeNodesRemoved(TreeModelEvent e){

		

	}

	@Override

	public void treeStructureChanged(TreeModelEvent e){

		

	}

	

	class MouseHandle extends MouseAdapter{

		@Override

		public void mousePressed(MouseEvent e){

			try{

				JTree tree = (JTree)e.getSource();

				int rowLocation = tree.getRowForLocation(e.getX(), e.getY());

				System.out.println("row:"+rowLocation);

				TreePath treePath = tree.getPathForRow(rowLocation);

				TreeNode treeNode = (TreeNode)treePath.getLastPathComponent();

				nodeName = treeNode.toString();

			}catch(NullPointerException ne){

				System.out.println("發生異常2");

			}

		}

	}

	

	public static void main(String...args){

		new JTreeDemo1();

	}

}