GUI_文件管理器(练习)

 

实现想windows下的文件管理器（主要是监听器里的方法，showDir()写法）

package com.mywindow.test;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

import java.io.File;



import javax.swing.JButton;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.SwingUtilities;

import javax.swing.WindowConstants;





/**

* This code was edited or generated using CloudGarden's Jigloo

* SWT/Swing GUI Builder, which is free for non-commercial

* use. If Jigloo is being used commercially (ie, by a corporation,

* company or business for any purpose whatever) then you

* should purchase a license for each developer using Jigloo.

* Please visit www.cloudgarden.com for details.

* Use of Jigloo implies acceptance of these licensing terms.

* A COMMERCIAL LICENSE HAS NOT BEEN PURCHASED FOR

* THIS MACHINE, SO JIGLOO OR THIS CODE CANNOT BE USED

* LEGALLY FOR ANY CORPORATE OR COMMERCIAL PURPOSE.

*/

public class NewJFrame extends javax.swing.JFrame {

    private static final String LINE_SEPARATOR = System.getProperty("line.separator");

    private JTextField jTextField1;

    private JButton jButton1;

    private JTextArea jTextArea1;



    /**

    * Auto-generated main method to display this JFrame

    */

    public static void main(String[] args) {

        SwingUtilities.invokeLater(new Runnable() {

            public void run() {

                NewJFrame inst = new NewJFrame();

                inst.setLocationRelativeTo(null);

                inst.setVisible(true);

            }

        });

    }

    

    public NewJFrame() {

        super();

        initGUI();

    }

    

    private void initGUI() {

        try {

            setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);

            getContentPane().setLayout(null);

            {

                jTextField1 = new JTextField();

                getContentPane().add(jTextField1, "Center");

                jTextField1.setBounds(12, 27, 268, 27);

                jTextField1.addKeyListener(new KeyAdapter() {

                    public void keyPressed(KeyEvent evt) {

                        jTextField1KeyPressed(evt);

                    }

                });

            }

            {

                jButton1 = new JButton();

                getContentPane().add(jButton1);

                jButton1.setText("\u8f6c\u5230");

                jButton1.setBounds(292, 28, 76, 24);

                jButton1.addActionListener(new ActionListener() {

                    public void actionPerformed(ActionEvent evt) {

                        jButton1ActionPerformed(evt);

                    }

                });

            }

            {

                jTextArea1 = new JTextArea();

                getContentPane().add(jTextArea1);

                jTextArea1.setBounds(12, 65, 356, 185);

            }

            pack();

            setSize(400, 300);

        } catch (Exception e) {

            //add your error handling code here

            e.printStackTrace();

        }

    }

    

    //Button的活动监听器

    private void jButton1ActionPerformed(ActionEvent evt) {

        showDir();

    }



    private void showDir() {

        /*

         * 通过点击按钮获取文本框目录

         * 将目录中的内容显示到文本区域中

         * */

        String dir_str = jTextField1.getText();

        

        File dir = new File(dir_str);

        

        if(dir.exists() && dir.isDirectory()){

            jTextArea1.setText("");

            

            String[] names = dir.list();

            

            for(String name : names){

                jTextArea1.append(name+LINE_SEPARATOR);

            }

        }

    }

    

    private void jTextField1KeyPressed(KeyEvent evt) {

        

        if(evt.getKeyCode()==KeyEvent.VK_ENTER){

            showDir();

        }

            

    }



}