- /*
- * 程序頭部注釋開始
- * 程序的版權(quán)和版本聲明部分
- * Copyright (c) 2011, 煙臺大學(xué)計(jì)算機(jī)學(xué)院學(xué)生
- * All rights reserved.
- * 文件名稱：GUI(練習(xí)-列出指定目錄內(nèi)容 有對話框Dialog)
- * 作 者：薛廣晨
- * 完成日期：2011 年 09 月 20 日
- * 版 本號：x1.0
-
- * 對任務(wù)及求解方法的描述部分
- * 輸入描述：
- * 問題描述:
- * 程序輸出：
- * 程序頭部的注釋結(jié)束
- */
-
- package xue;
- import java.awt.*;
- import java.awt.event.*;
- import java.io.File;
-
- public class MyDiaglog {
-
- /**
- * @param args
- */
- private Frame f;
- private TextField tf;
- private Button but;
- private TextArea ta;
-
- private Dialog d;
- private Label lab;
- private Button okBut;
-
- MyDiaglog()
- {
- init();
- }
- public void init()
- {
- f = new Frame("my window");
- f.setBounds(300, 100, 600, 500);
- f.setLayout(new FlowLayout());
-
- tf = new TextField(60);
-
- but = new Button("轉(zhuǎn)到");
-
- ta = new TextArea(25, 70);
-
- d = new Dialog(f, "提示信息——self", true);
- d.setBounds(400, 200, 240,150);
- d.setLayout(new FlowLayout());
- lab = new Label();
- okBut = new Button("確定");
-
- d.add(lab);
- d.add(okBut);
-
- f.add(tf);
- f.add(but);
- f.add(ta);
-
- myEvent();
- f.setVisible(true);
- }
- private void myEvent() {
- // TODO Auto-generated method stub
- d.addWindowListener(new WindowAdapter()
- {
- public void windowClosing(WindowEvent e)
- {
- d.setVisible(false);
- }
- });
-
- okBut.addActionListener(new ActionListener()
- {
- public void actionPerformed(ActionEvent e)
- {
- d.setVisible(false);
- }
- });
- tf.addKeyListener(new KeyAdapter()
- {
- public void keyPressed(KeyEvent e)
- {
- if(e.getKeyCode() == KeyEvent.VK_ENTER)
- {
- showDir();
- }
- }
- });
-
- but.addActionListener(new ActionListener()
- {
- public void actionPerformed(ActionEvent e)
- {
- showDir();
- }
- });
- f.addWindowListener(new WindowAdapter()
- {
- public void windowClosing(WindowEvent e)
- {
- System.exit(0);
- }
- });
-
- }
-
- private void showDir()
- {
- // TODO Auto-generated method stub
- String dirPath = tf.getText();
-
- File dir = new File(dirPath);
- if(dir.exists() && dir.isDirectory())
- {
- ta.setText("");
- String[] names = dir.list();
- for(String name : names)
- {
- ta.append(name + "\r\n");
- }
- }
- else
- {
- String info = "您輸入的信息："+dirPath+"是錯誤的。請重輸";
- lab.setText(info);
- d.setVisible(true);
- }
-
- }
-
- public static void main(String[] args) {
- // TODO Auto-generated method stub
- new MyDiaglog();
-
- }
-
- }
運(yùn)行結(jié)果：
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