如果我給出確切的文件夾位置，則會刪除文件。但我想要得到的是它必須搜索包含子文件夾的目錄，它還必須沿著子文件夾搜索并刪除下拉列表中指定的指定文件（例如文件名將是 borerry_furn）請幫助我提前致謝。
1 回答
溫溫醬
TA貢獻1752條經驗 獲得超4個贊
它必須搜索包含子文件夾的目錄，也必須沿著子文件夾搜索
搜索目錄的方法需要是遞歸的。
以下是列出所有子目錄中的文件的遞歸方法的示例：
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableFile extends JFrame
implements ActionListener, Runnable
{
JTable table;
DefaultTableModel model;
JTextField path;
JLabel currentFile;
JButton getFiles;
int totalFiles;
int totalDirectories;
public TableFile()
{
path = new JTextField("C:\\java");
add(path, BorderLayout.PAGE_START );
getFiles = new JButton( "Get Files" );
getFiles.addActionListener( this );
add(getFiles, BorderLayout.LINE_START );
String[] columnNames = {"IsFile", "Name"};
model = new DefaultTableModel(columnNames, 0);
table = new JTable( model );
JScrollPane scrollPane = new JScrollPane( table );
add(scrollPane, BorderLayout.PAGE_END);
currentFile = new JLabel(" ");
// add(currentFile, BorderLayout.PAGE_END); // displays filename in label
}
public void actionPerformed(ActionEvent e)
{
model.setNumRows(0);
new Thread( this ).start();
table.requestFocusInWindow();
}
public void run()
{
totalFiles = 0;
totalDirectories = 0;
listFiles( new File( path.getText() ) );
System.out.println("Directories: " + totalDirectories);
System.out.println("Files : " + totalFiles);
}
private void listFiles(File dir)
{
updateTable( dir );
totalDirectories++;
System.out.println("Processing directory: " + dir);
// add a delay to demonstrate processing one directory at a time
try { Thread.sleep(500); }
catch(Exception e) {}
File[ ] entries = dir.listFiles( );
int size = entries == null ? 0 : entries.length;
for(int j = 0; j < size; j++)
{
if (entries[j].isDirectory( ))
{
listFiles( entries[j] );
}
else
{
updateTable( entries[j] );
currentFile.setText( entries[j].toString() );
totalFiles++;
}
}
}
private void updateTable(final File file)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
Vector<Object> row = new Vector<Object>(2);
row.addElement( new Boolean( file.isFile() ) );
row.addElement( file.toString() );
model.addRow( row );
int rowCount = table.getRowCount() - 1;
table.changeSelection(rowCount, rowCount, false, false);
}
});
}
public static void main(String[] args)
{
TableFile frame = new TableFile();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setLocationRelativeTo( null );
frame.setVisible(true);
}
}
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