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UI.java
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708 lines (604 loc) · 29.4 KB
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package FileSystem;
import javax.swing.*;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.event.TreeWillExpandListener;
import javax.swing.tree.*;
import FileSystem.FileSystem;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
/**
* Created by hongjiayong on 16/6/7.
*/
public class UI extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private JTree tree;
private JScrollPane treePane;
private JScrollPane tablePane;
private tableModel model = new tableModel();
private JTable fileTable;
private JFileChooser chooser;
private File rootFile;
private File readMe;
private Block block1;
private Block block2;
private Block block3;
private Block block4;
private Map<String, Block> blocks = new HashMap<String, Block>();
private JLabel blockName = new JLabel("Block Name:");
private JLabel nameField = new JLabel();
private JLabel haveUsed = new JLabel("Used:");
private JLabel usedField = new JLabel();
private JLabel freeYet = new JLabel("Free:");
private JLabel freeField = new JLabel();
private JLabel fileNum = new JLabel("Block's File Number:");
private JLabel fileNumField = new JLabel();
private JTextField txtFilePath = new JTextField();
private int fileTreeNodeSize = 20;
private DefaultMutableTreeNode[] fileTreeNode = new DefaultMutableTreeNode[fileTreeNodeSize];
private int fp_top = 0, fp_end = 0, fp = 0;
private JTextField searchLine = new JTextField();
private static String helpMessage =
"<html>" +
"<body>" +
"<h1>文件系统模拟</h1>" +
"<h2>技术细节</h2>" +
"<h3>显式链接(FAT)</h3>" +
"<ul> <li>用一个专用文件记录分配和未分配的内存块</li> <li>使用链接的方式,不存在内存碎片</li> </ul>" +
"<h3>空闲空间管理 —— 位图</h3>" +
"<ul> <li>用二进制0和1分别代表未分配的内存块和已经分配的内存块</li> <li>在该项目中位图和FAT进行了合并</li> </ul>" +
"<h3>目录结构 —— 多级目录结构</h3>" +
"<h3>FCB</h3>" +
"<ul> <li>文件类型</li> <li>文件名</li> <li>文件大小</li> <li>文件最近更新时间</li> </ul>" +
"<h2>操作说明</h2>" +
"<ul> <li>必须先选择一个计算机上的文件夹作为模拟工作目录</li> <li>左侧树状结构即文件目录</li> <li>双击或点击文件夹左侧小图标可以打开文件目录</li> " +
"<li>右侧空白处为表格区域,将现实相关文件信息</li> <li>双击表格中的项可以直接打开相关文件</li>" +
"<li>下方绿色为盘信息面板,将现实相应盘的相应信息</li>" +
"<li>最下方空白处将显示内存块当前状况</li> </ul>" +
"<li>在树状结构中选中某一节点,右键即可选择相应的文件操作</li>" +
"<li>创建新的文件会要求输入文件名和文件大小(KB)</li>" +
"<h2>特别说明</h2>" +
"<ul> <li>本程序重在模拟,并不是真正地为文件开了这么大的空间</li> <li>仅支持生成txt,文本文件中直接现实FCB,不支持修改内容</li>" +
"<li>对于非法输入都会直接导致文件生成失败</li> <li>如果存档文件recover.txt被破坏,将无法打开文件</li></ul>" +
"</body>" +
"</html>";
private void insertFileTreeNode(DefaultMutableTreeNode fNode){
fileTreeNode[fp] = fNode;
if(fp == fp_end){
if(fp == fileTreeNodeSize - 1){
fp = fp_end = 0;
}
else{
fp++;
fp_end++;
}
if(fp_top == fp_end){
fp_top++;
}
}
else{
if(fp == fileTreeNodeSize - 1){
fp = 0;
}else{
fp++;
}
}
}
// Search a file
public boolean searchFile(String fileName, File parent){
boolean find = false;
File [] files = parent.listFiles();
for (File myFile:files){
if (myFile.getName().equals(fileName)){
find = true;
model.addRow(new MyFile(myFile, "0", Block.getSpace(myFile))); //暂时放在0盘
}
if (myFile.isDirectory() && myFile.canRead()){
if(!find){
find = searchFile(fileName, myFile);
}
else{
searchFile(fileName, myFile);
}
}
}
return find;
}
// Update block's information
public void upDateBlock(Block currentBlock){
fileNumField.setText(String.valueOf(currentBlock.getFileNum()));
usedField.setText(String.valueOf(currentBlock.getSpace()) + " KB");
freeField.setText(String.valueOf(1024 - currentBlock.getSpace()) + "KB");
}
private void upDateTree(DefaultMutableTreeNode parent, boolean insertFile){
if(parent == null) return;
String blokName = ((MyFile)parent.getUserObject()).getBlockName();
Block currentBlock = blocks.get(blokName);
nameField.setText(String.valueOf(blokName));
upDateBlock(currentBlock);
String rootPath = ((MyFile)parent.getUserObject()).getFilePath();
File rootFile = new File(rootPath);
if (parent.getChildCount() > 0) { //is a dir
model.removeRows(0, model.getRowCount());
File[] childFiles = rootFile.listFiles();
for (File file : childFiles) {
model.addRow(new MyFile(file, blokName, Block.getSpace(file)));
}
fileTable.updateUI();
if(insertFile){
insertFileTreeNode(parent);
}
txtFilePath.setText(rootPath);
}
}
private void initJFileChooser(String rootPath){
String path = File.listRoots()[0].getPath();
chooser = new JFileChooser(path);
chooser.setDialogTitle("Choose a dir for this demo");
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
chooser.setPreferredSize(new Dimension(800, 600));
int result = chooser.showOpenDialog(this);
if (result == JFileChooser.APPROVE_OPTION){
rootPath = chooser.getSelectedFile().getPath();
}
}
private void initJOptionPane(String message, String title){
JLabel label = new JLabel(message);
label.setFont(new Font("微软雅黑", Font.CENTER_BASELINE, 20));
JScrollPane jScrollPane = new JScrollPane(label);
jScrollPane.setPreferredSize(new Dimension(500, 600));
JOptionPane.showMessageDialog(null,
jScrollPane,
title,
JOptionPane.DEFAULT_OPTION);
}
private void initSearchLine(){
JPanel searchPane = new JPanel(new FlowLayout(FlowLayout.LEFT));
ImageIcon back_icon = new ImageIcon("E:/Java/MyFileSystem/src/back_icon.jpg");
JButton back = new JButton(back_icon);
back.setPreferredSize(new Dimension(back_icon.getImage().getWidth(null), back_icon.getImage().getHeight(null)));
back.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if(fp == fp_top) return;
DefaultMutableTreeNode parent = null;
if(fp == 0){
fp = fileTreeNodeSize-1;
parent = fileTreeNode[fp];
}else{
parent = fileTreeNode[--fp];
}
upDateTree(parent, false);
}
});
searchPane.add(back);
ImageIcon front_icon = new ImageIcon("E:/Java/MyFileSystem/src/front_icon.jpg");
JButton front = new JButton(front_icon);
front.setPreferredSize(new Dimension(front_icon.getImage().getWidth(null), front_icon.getImage().getHeight(null)));
front.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if(fp == fp_end) return;
DefaultMutableTreeNode parent = null;
if(fp == fileTreeNodeSize-1){
fp = 0;
parent = fileTreeNode[fp];
}else{
parent = fileTreeNode[++fp];
}
upDateTree(parent, false);
}
});
searchPane.add(front);
searchPane.add(txtFilePath);
txtFilePath.setPreferredSize(new Dimension(500, 30));
final JLabel searchLabel = new JLabel("Search "); //(eg. File:hehe.txt Dir:hehe):
searchPane.add(searchLabel);
searchLine.setPreferredSize(new Dimension(200, 30));
searchPane.add(searchLine);
JButton searchButton = new JButton("start");
searchButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String fileName = searchLine.getText();
model.removeRows(0, model.getRowCount());
if(!searchFile(fileName, rootFile)){
JOptionPane.showMessageDialog(null, "检索失败!", "Fail!", JOptionPane.WARNING_MESSAGE);
}
fileTable.updateUI();
searchLine.setText("");
}
});
searchPane.add(searchButton);
getContentPane().add(searchPane, BorderLayout.NORTH);
}
// Ui
public UI() throws IOException {
setTitle("File System Demo by 1552718 韦曾妮");
getContentPane().setLayout(new BorderLayout());
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String rootPath = new String();
initJFileChooser(rootPath);
initJOptionPane(helpMessage, "文件系统模拟");
initSearchLine();
// Create work space
rootFile = new File(rootPath + File.separator + "myFileSystem");
readMe = new File(rootPath + File.separator + "myFileSystem" + File.separator + "ReadMe.txt");
boolean flag = true;
// JTree init
final DefaultMutableTreeNode root = new DefaultMutableTreeNode(new MyFile(rootFile, "0", 10240));
insertFileTreeNode(root);
txtFilePath.setText(((MyFile)root.getUserObject()).getFileName());
if (!rootFile.exists()) {
flag = false;
try {
rootFile.mkdir();
readMe.createNewFile();
} catch (Exception e) {
JOptionPane.showMessageDialog(null, "The place is not support to create dir!", "Error", JOptionPane.ERROR_MESSAGE);
System.exit(0);
}
FileWriter writer = new FileWriter(readMe.getPath());
writer.write("你好, 这是我的文件系统!!! \t\n");
writer.write("空间: 10 * 1024K = 10M \t\n");
writer.write("空闲空间管理:bitmap \t\n");
writer.write("存储块管理:FAT \t\n");
writer.flush();
writer.close();
}
String block1Path = rootFile.getPath() + File.separator + "C盘";
block1 = new Block("C盘", new File(block1Path), flag);
blocks.put("C盘", block1);
String block2Path = rootFile.getPath() + File.separator + "D盘";
block2 = new Block("D盘", new File(block2Path), flag);
blocks.put("D盘", block2);
String block3Path = rootFile.getPath() + File.separator + "E盘";
block3 = new Block("E盘", new File(block3Path), flag);
blocks.put("E盘", block3);
String block4Path = rootFile.getPath() + File.separator + "F盘";
block4 = new Block("F盘", new File(block4Path), flag);
blocks.put("F盘", block4);
root.add(new DefaultMutableTreeNode(new MyFile(block1.getBlockFile(), block1.getBlockName(), 1024.0)));
model.addRow(new MyFile(block1.getBlockFile(), block1.getBlockName(), 1024.0));
((DefaultMutableTreeNode)root.getChildAt(0)).add(new DefaultMutableTreeNode("temp"));
root.add(new DefaultMutableTreeNode(new MyFile(block2.getBlockFile(), block2.getBlockName(), 1024.0)));
model.addRow(new MyFile(block2.getBlockFile(), block2.getBlockName(), 1024.0));
((DefaultMutableTreeNode)root.getChildAt(1)).add(new DefaultMutableTreeNode("temp"));
root.add(new DefaultMutableTreeNode(new MyFile(block3.getBlockFile(), block3.getBlockName(), 1024.0)));
model.addRow(new MyFile(block3.getBlockFile(), block3.getBlockName(), 1024.0));
((DefaultMutableTreeNode)root.getChildAt(2)).add(new DefaultMutableTreeNode("temp"));
root.add(new DefaultMutableTreeNode(new MyFile(block4.getBlockFile(), block4.getBlockName(), 1024.0)));
model.addRow(new MyFile(block4.getBlockFile(), block4.getBlockName(), 1024.0));
((DefaultMutableTreeNode)root.getChildAt(3)).add(new DefaultMutableTreeNode("temp"));
root.add(new DefaultMutableTreeNode(new MyFile(readMe, "0", 0)));
model.addRow(new MyFile(readMe, "0", 0));
// Table init
fileTable = new JTable(model);
fileTable.getTableHeader().setFont(new Font(Font.DIALOG,Font.CENTER_BASELINE,24));
fileTable.setSelectionBackground(Color.ORANGE);
fileTable.updateUI();
final DefaultTreeModel treeModel = new DefaultTreeModel(root);
tree = new JTree(treeModel);
tree.setEditable(false);
tree.putClientProperty("Jtree.lineStyle", "Horizontal");
tree.getSelectionModel().setSelectionMode
(TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.setShowsRootHandles(true);
tree.addTreeSelectionListener(new TreeSelectionListener() {
@Override
public void valueChanged(TreeSelectionEvent e) {
DefaultMutableTreeNode parent = null;
TreePath parentPath = e.getPath();
if (parentPath == null){
parent = root;
}else{
parent = (DefaultMutableTreeNode) (parentPath.getLastPathComponent());
}
upDateTree(parent, true);
}
});
tree.addTreeWillExpandListener(new TreeWillExpandListener() {
@Override
public void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException {
DefaultMutableTreeNode parent = null;
TreePath parentPath = event.getPath();
if (parentPath == null){
parent = root;
}else{
parent = (DefaultMutableTreeNode) (parentPath.getLastPathComponent());
}
String blokName = ((MyFile)parent.getUserObject()).getBlockName();
String rootPath = ((MyFile)parent.getUserObject()).getFilePath();
insertFileTreeNode(parent);
txtFilePath.setText(rootPath);
File rootFile = new File(((MyFile)parent.getUserObject()).getFilePath());
File [] childFiles = rootFile.listFiles();
model.removeRows(0, model.getRowCount());
for (File myFile : childFiles){
DefaultMutableTreeNode node = null;
node = new DefaultMutableTreeNode(new MyFile(myFile, blokName, Block.getSpace(myFile)));
if (myFile.isDirectory() && myFile.canRead()) {
node.add(new DefaultMutableTreeNode("temp"));
}
treeModel.insertNodeInto(node, parent, parent.getChildCount());
model.addRow(new MyFile(myFile, blokName, Block.getSpace(myFile)));
}
if (parent.getChildAt(0).toString().equals("temp") && parent.getChildCount() != 1)
treeModel.removeNodeFromParent((MutableTreeNode) parent.getChildAt(0));
fileTable.updateUI();
}
@Override
public void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException {
DefaultMutableTreeNode parent = null;
TreePath parentPath = event.getPath();
if (parentPath == null){
parent = root;
}else{
parent = (DefaultMutableTreeNode) (parentPath.getLastPathComponent());
}
if (parent.getChildCount() > 0) {
int count = parent.getChildCount();
for (int i = count - 1; i >= 0; i--){
treeModel.removeNodeFromParent((MutableTreeNode) parent.getChildAt(i));
}
treeModel.insertNodeInto(new DefaultMutableTreeNode("temp"), parent, parent.getChildCount());
}
model.removeRows(0, model.getRowCount());
fileTable.updateUI();
}
});
treePane = new JScrollPane(tree);
treePane.setPreferredSize(new Dimension(200, 400));
getContentPane().add(treePane, BorderLayout.WEST);
tablePane = new JScrollPane(fileTable);
getContentPane().add(tablePane, BorderLayout.CENTER);
// Mouse DoubleClick to open a file
fileTable.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
super.mouseClicked(e);
if (e.getClickCount() == 2 && e.getButton() == MouseEvent.BUTTON1){
String fileName = ((String) model.getValueAt(fileTable.getSelectedRow(), 0));
String filePath = ((String) model.getValueAt(fileTable.getSelectedRow(), 1));
try {
if(Desktop.isDesktopSupported()) {
Desktop desktop = Desktop.getDesktop();
desktop.open(new File(filePath));
}
} catch (IOException e1) {
JOptionPane.showMessageDialog(null, "抱歉, 出错了!", "不能打开",
JOptionPane.ERROR_MESSAGE);
}
}
}
});
// Menu init
final JPopupMenu myMenu = new JPopupMenu();
myMenu.setPreferredSize(new Dimension(300, 200));
// Create a file and update fileTable to show it
JMenuItem createFileItem = new JMenuItem("新建文件");
createFileItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
MyFile temp = (MyFile)node.getUserObject();
String blokName = temp.getBlockName();
Block currentBlock = blocks.get(blokName);
String inputValue;
double capacity;
JOptionPane inputPane = new JOptionPane();
inputPane.setPreferredSize(new Dimension(600, 600));
inputPane.setInputValue(JOptionPane.showInputDialog("文件名:"));
if (inputPane.getInputValue() == null) {
return;
}
inputValue = inputPane.getInputValue().toString();
inputPane.setInputValue(JOptionPane.showInputDialog("大小(KB):"));
if (inputPane.getInputValue() == null) {
return;
}
capacity = Double.parseDouble(inputPane.getInputValue().toString());
File newFile = new File(temp.getFilePath() + File.separator + inputValue + ".txt");
if (!newFile.exists() && !inputValue.equals(null)){
try {
if (currentBlock.createFile(newFile, capacity)) {
model.addRow(new MyFile(newFile, blokName, capacity));
fileTable.updateUI();
upDateBlock(currentBlock);
JOptionPane.showMessageDialog(null, "新建文件成功!", "Success", JOptionPane.DEFAULT_OPTION);
}
} catch (IOException e1) {
JOptionPane.showMessageDialog(null, "新建失败!!!", "Error", JOptionPane.ERROR_MESSAGE);
}
}
}
});
myMenu.add(createFileItem);
// create a dir and update fileTable to show it
JMenuItem createDirItem = new JMenuItem("新建文件夹");
createDirItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
MyFile temp = (MyFile)node.getUserObject();
String blokName = temp.getBlockName();
Block currentBlock = blocks.get(blokName);
String inputValue = JOptionPane.showInputDialog("文件夹名称:");
if (inputValue == null) {
return;
}
File newDir = new File(temp.getFilePath() + File.separator + inputValue);
if (newDir.exists())
FileSystem.deleteDirectory(newDir.getPath());
try{
newDir.mkdir();
DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(new MyFile(newDir, blokName, 0));
newNode.add(new DefaultMutableTreeNode("temp"));
model.addRow(new MyFile(newDir, blokName, 0));
fileTable.updateUI();
upDateBlock(currentBlock);
JOptionPane.showMessageDialog(null, "新建文件夹成功! ", "Success", JOptionPane.DEFAULT_OPTION);
}catch (Exception E){
JOptionPane.showMessageDialog(null, "新建失败!!!", "Error", JOptionPane.ERROR_MESSAGE);
}
}
});
myMenu.add(createDirItem);
// Delete a file or a dir
JMenuItem deleteItem = new JMenuItem("删除");
deleteItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
MyFile temp = (MyFile)node.getUserObject();
String blokName = temp.getBlockName();
Block currentBlock = blocks.get(blokName);
int choose = JOptionPane.showConfirmDialog(null, "你确定要删除这个文件/文件夹?", "confirm", JOptionPane.YES_NO_OPTION);
if (choose == 0){
if (currentBlock.deleteFile(temp.getMyFile(), temp.getCapacity())){
try {
currentBlock.rewriteBitMap();
currentBlock.rewriteRecoverWriter();
} catch (IOException e1) {
e1.printStackTrace();
}
upDateBlock(currentBlock);
treeModel.removeNodeFromParent(node);
JOptionPane.showMessageDialog(null, "删除成功！", "Success", JOptionPane.DEFAULT_OPTION);
}else{
JOptionPane.showMessageDialog(null, "删除失败!!!", "Error", JOptionPane.ERROR_MESSAGE);
}
}
}
});
myMenu.add(deleteItem);
// Format a dir
JMenuItem formatItem = new JMenuItem("格式化");
formatItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
MyFile temp = (MyFile)node.getUserObject();
String blokName = temp.getBlockName();
Block currentBlock = blocks.get(blokName);
int choose = JOptionPane.showConfirmDialog(null, "你确定要格式化这个文件夹?", "confirm", JOptionPane.YES_NO_OPTION);
if (choose == 0){
try{
if (temp.getMyFile().isDirectory()) {
for (File myfile : temp.getMyFile().listFiles()) {
currentBlock.deleteFile(myfile, Block.getSpace(myfile));
}
upDateBlock(currentBlock);
JOptionPane.showMessageDialog(null, "格式化成功", "Success", JOptionPane.DEFAULT_OPTION);
currentBlock.rewriteBitMap();
}
}catch (Exception E1){
JOptionPane.showMessageDialog(null, "格式化失败!!!", "Error", JOptionPane.ERROR_MESSAGE);
}
}
}
});
myMenu.add(formatItem);
// Rename a file/dir
JMenuItem renameItem = new JMenuItem("重命名");
renameItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
MyFile temp = (MyFile)node.getUserObject();
String blokName = temp.getBlockName();
Block currentBlock = blocks.get(blokName);
String inputValue = null;
JOptionPane inputPane = new JOptionPane();
inputPane.setInputValue(JOptionPane.showInputDialog("新名字:"));
if (inputPane.getInputValue() == null) {
return;
}
inputValue = inputPane.getInputValue().toString();
try {
currentBlock.renameFile(temp.getMyFile(), inputValue, temp.getCapacity());
JOptionPane.showMessageDialog(null, "重命名成功", "Success", JOptionPane.DEFAULT_OPTION);
} catch (IOException e1) {
JOptionPane.showMessageDialog(null, "重命名失败!!!", "Error", JOptionPane.ERROR_MESSAGE);
}
}
});
myMenu.add(renameItem);
// view a file/dir fcb
JMenuItem viewItem = new JMenuItem("属性");
viewItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
MyFile file = (MyFile)node.getUserObject();
String fileMessage ="<html>" +
"<body>" +
"<li>文件名：\t\t" + file.getFileName() + "</li>" +
"<li>文件类型：\t\ttxt</li>" +
"<li>文件地址：\t\t" + file.getFilePath() + "</li>" +
" <li>文件大小：\t\t" + file.getCapacity() + "KB</li>" +
"</body>" +
"</html>";
initJOptionPane(fileMessage, file.getFileName() + "的属性");
}
});
myMenu.add(viewItem);
// Listen to the tree
tree.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
super.mouseClicked(e);
if (e.getButton() == MouseEvent.BUTTON3){
myMenu.show(e.getComponent(), e.getX(), e.getY());
}
}
});
// Information for the block
JPanel panel = new JPanel();
panel.setBackground(Color.green);
panel.setLayout(new FlowLayout(FlowLayout.CENTER));
JLabel tips = new JLabel("文件操作:选中左侧文件之后右键 打开文件:双击右侧表格内文件");
panel.add(tips);
panel.add(blockName);
nameField.setForeground(Color.RED);
panel.add(nameField);
panel.add(new JLabel(" "));
panel.add(haveUsed);
usedField.setForeground(Color.RED);
panel.add(usedField);
panel.add(new JLabel(" "));
panel.add(freeYet);
freeField.setForeground(Color.RED);
panel.add(freeField);
panel.add(new JLabel(" "));
panel.add(fileNum);
fileNumField.setForeground(Color.RED);
panel.add(fileNumField);
getContentPane().add(panel, BorderLayout.SOUTH);
setSize(1000, 580);
setVisible(true);
}
public static void main(String[] args){
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UI frame = new UI();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
}