displayfile.java

Java

import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;

public class DisplayFile extends JApplet implements ActionListener {
 
 
    public JTextArea theText=new JTextArea();
    public  String name=new String(); 
   // public String name1=new String();
   
        
    
    public void init() {

        this.setSize(300, 200);
        Container contentPane = getContentPane();
    
        contentPane.setBackground(Color.WHITE);
        contentPane.setLayout(new BorderLayout());
        JButton DisplayButton = new JButton("显示文件");
        DisplayButton.addActionListener(this);
        contentPane.add(DisplayButton,BorderLayout.SOUTH);
       theText=new JTextArea(30,40);
       theText.setEditable(false);
        theText.setBackground(Color.white);
        contentPane.add(theText,BorderLayout.NORTH);
        try {
        GetFile(".");
            } catch (Exception e) {
            e.printStackTrace();
            }
        
    }

    public void actionPerformed(ActionEvent e) {
        Container contentPane = getContentPane();
        if (e.getActionCommand().equals("显示文件"))
            theText.append(name);
       
        else
            System.out.println("Error in Button interface");
    }

    
  public void GetFile(String strPath) throws Exception {
        try {
            File file = new File(strPath); 
            File[] tempFile = file.listFiles(); 
            for(int i = 0;i<tempFile.length;i++) 
            { 
            if(tempFile[i].isFile()) 
            { 
             name=tempFile[i].getName()+ "\r\n"+ name; 
            } 
      
               }
            }

        catch (Exception e) {
        System.out.println("Error： " + e);
        }
        }
}