【Java开源代码栏目提醒】：网学会员为需要Java开源代码的朋友们搜集整理了FtpClientFrame.java相关资料，希望对各位网友有所帮助!

    package ftpclient;
    
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import sun.net.ftp.*;
    import sun.net.*;
    import java.io.*;
    
    public class FtpClientFrame extends JFrame {
      JPanel contentPane;
      Label labelPrompt = new Label();                   // 状态提示
      Label labelHost = new Label();
      TextField textFieldHost = new TextField();         // 主机地址
      Label labelUser = new Label();
      TextField textFieldUser = new TextField();         // 用户名
      Label labelPassword = new Label();
      TextField textFieldPassword = new TextField();     // 密码
      Button buttonLink = new Button();                  // 连接按钮
      Button buttonDisconnect = new Button();            // 断开按钮
      Label labelFileShow = new Label();
      TextArea textAreaContent = new TextArea();         // 显示文件和目录的文本域
      Label labelFile = new Label();
      TextField textFieldFile = new TextField();         // 要下载的文件名输入框
      Label labelDir = new Label();
      TextField textFieldDir = new TextField();          // 保存文件的本机目录名
      Button buttonDownload = new Button();              // 下载按钮
    
      FtpClient myFtp = null;                            // FtpClient对象
      TelnetInputStream inStream = null;                 // 输入流对象
    
      public FtpClientFrame() {                          // 构造函数
        try {
          jbInit();                                      // 界面初始化并显示
        }
        catch(Exception e) {
          e.printStackTrace();
        }
      }
    
      // 界面初始化并显示
      private void jbInit() throws Exception {
        contentPane = (JPanel) this.getContentPane();
        contentPane.setLayout(null);
    
        labelPrompt.setBounds(new Rectangle(25, 6, 180, 22));
        labelHost.setText("主机名:");
        labelHost.setBounds(new Rectangle(25, 38, 50, 22));
        textFieldHost.setBounds(new Rectangle(78, 38, 280, 22));
    
        labelUser.setText("用户名:");
        labelUser.setBounds(new Rectangle(25, 70, 50, 22));
        textFieldUser.setBounds(new Rectangle(78, 70, 114, 22));
        labelPassword.setText("密码:");
        labelPassword.setBounds(new Rectangle(205, 70, 37, 22));
        textFieldPassword.setBounds(new Rectangle(244, 70, 114, 22));
        textFieldPassword.setEchoChar('*');
    
        buttonLink.setLabel("连接");
        buttonLink.setBounds(new Rectangle(375, 38, 70, 22));
        buttonLink.addActionListener(new java.awt.event.ActionListener() {
          public void actionPerformed(ActionEvent e) {
            buttonLink_actionPerformed(e);
          }
        });
        buttonLink.setEnabled(true);
    
        buttonDisconnect.setLabel("断开");
        buttonDisconnect.setBounds(new Rectangle(375, 70, 70, 22));
        buttonDisconnect.addActionListener(new java.awt.event.ActionListener() {
          public void actionPerformed(ActionEvent e) {
            buttonDisconnect_actionPerformed(e);
          }
        });
        buttonDisconnect.setEnabled(false);
    
        labelFileShow.setText("目录列表");
        labelFileShow.setBounds(new Rectangle(25, 105, 140, 22));
    
        textAreaContent.setBounds(new Rectangle(25, 135, 420, 235));
        textAreaContent.setEditable(false);
    
        labelFile.setText("欲下载的文件名:");
        labelFile.setBounds(new Rectangle(25, 380, 100, 22));
        textFieldFile.setBounds(new Rectangle(128, 380, 230, 22));
        labelDir.setText("存放文件的路径:");
        labelDir.setBounds(new Rectangle(25, 412, 100, 22));
        textFieldDir.setBounds(new Rectangle(128, 412, 230, 22));
    
        buttonDownload.setLabel("下载");
        buttonDownload.setBounds(new Rectangle(375, 412, 70, 22));
        buttonDownload.addActionListener(new java.awt.event.ActionListener() {
          public void actionPerformed(ActionEvent e) {
            buttonDownload_actionPerformed(e);
          }
        });
        buttonDownload.setEnabled(false);
    
        contentPane.add(labelPrompt, null);
        contentPane.add(labelHost, null);
        contentPane.add(textFieldHost, null);
        contentPane.add(labelUser, null);
        contentPane.add(textFieldUser, null);
        contentPane.add(labelPassword, null);
        contentPane.add(textFieldPassword, null);
        contentPane.add(buttonLink, null);
        contentPane.add(buttonDisco