操作系统实验(文件目录管理java实现)

1、操作系统实验（文件目录管理java实现）操作系统实验（文件目录管理java实现）一实验目的1深刻理解文件目录管理的概念。2掌握文件目录管理问题，文件系统的树形结构。二实验设备PC机三实验内容在Java开发平台模拟文件目录管理问题，文件系统的树形结构。四程序的主要代码/*文件以为结束标志，来区分文件与文件夹。创建文件或文件夹时，必须输 入所在路径，否则默认创建在第一级。删除文件也必须标明，文件所在路径。*/import javax. swing. *;import java. awt. *;import java. awt. event. *;public class MyField exten

2、ds JFrame（protected JButton buttonl, button2, button3, button4;protected JTextField blankl, blank2, blank3;protected JTextArea blank!;StringLZ array = new String50_;Stringarrayl = new String50;String tt = #；public MyField（）JPanel pl = new JPanel(new GridLayout(4, 2, 5, 5);pl. add(buttonl = new JButt

3、on(创建");pl. add(blankl = new JTextField(lO);pl. add(button2 = new JButton(查找”);pl. add(blank2 = new JTextField(lO);pl. add(button3 = new JButton("删除”);pl. add(blank3 = new JTextField(lO);pl. add(new JLabel ("操作情况显示”);pl. add(button4 = new JButton(“格式化”)；JPanel p2 = new JPanel(new Grid

4、Layout(2, 1);p2. add (pl);p2. add (blank*! = new JTextAreaO);setLayout(new FlowLayout(FlowLayout. CENTER, 10, 20);add(p2);Font fontl = new Font (，zSansSerif，z, Font. BOLD, 16);blankl. setFont (fontl);blank2. setFont(fontl);blank3. setFont (fontl);blank4. setFont(fontl);button4. setBackground(Color,

5、red);buttonl. addActionListener(new ActionListener()public void actionPerformed(ActionEvent e)blank4. setText ;String wh = blankl. getText ();if (wh. indexOf (' ® ) = T wh. indexOf (' ® ) = wh. length()-1) outer:for(int i = 0; i < 50; i+) String pp = arrayi. substring(0, wh. len

6、gth() + 1);String uu = wh + /；String ee = wh + #；if (pp. equals (uu) pp. equals (ee) JOptionPane. showMessageDialog(null, 文件：“+ wh + 已存 在! n +不可在此文件下建立文件或文件夹)； break outer;if (arrayi = tt) arrayiZ = wh + tt;JOptionPane. showMessageDialog (null, wh + 创建成功)； break outer;else JOptionPane. showMessageDi

7、alog(null, 不能在文件下建立文件或文件 夹)； ) !)；button2. addActionListener (new ActionListener () public void actionPerformed(ActionEvent e) String wh = blank2. getText();int count = 0;blank4. setText(");blank4. append (所查找结果如下：n);for(int i = 0; i < 50; i+) if (array i. indexOf (wh) != T) blank4. append (

8、array i. substring(0, arrayEiL index0f('#') + n); count+;if(count = 0)JOptionPane. showMessageDialog(null,“您所查找得文件不存在”)；!)；button3. addActionListener (new ActionListener () public void actionPerformed(ActionEvent e) String wh = blank3. getText();int count = 0;blank4. setText();blank4. append

9、 (所删除文件如下：n);for(int i = 0; i < 50; i+)array1 Lil = tt;for(int i = 0; i < 50; i+ ) String pp = arrayi. substring(0, wh. length() + 1);String uu = wh + /；String ee = wh + #；if (ee. equals (pp) pp. equals (uu) blank4. append (array i. substring (0, array iL index0f('#') + n);arrayiZ = tt

10、;count+;)if (count = 0)JOptionPane. showMessageDialog(null,“你所要删除的文件不存在");else JOptionPane. showMessageDialog(null,“总共删除"+ count + 个文件。”);for(int i = 0; i < 50; i+) if(arrayi. indexOf C ) > 0)for(int n = 0; n < 50; n+) if (arraylEn = tt) arrayln = arrayi;break;)for(int i = 0; i &l

11、t; 50; i+)arrayiZ = arrayliL;);button4. addActionListener (new ActionListener () public void actionPerformed(ActionEvent e) for(int i = 0; i < 50; i+)arrayiZ = tt;blankl. setText ;blank2. setText (");blank3. setText (");blank4. setText ()；JOptionPane. showMessageDialog(null, 格式化完成”)；);public static void main(StringLl args) MyField frame = new MyFieldO;frame. setTitle (文件系统管理“);frame. setSize(500, 500);frame. setLocationRelativeTo(null);frame. setDefaultCloseOperation(JFrame. EXIT_ON_CLOSE);frame. setVisible(true);JOptionPa