Question

我是GUI的新手。我正在尝试为已经制作的java程序创建一个gui。我希望用户输入文件的端口号和位置，从那里我想用我已经制作的程序来完成剩下的工作。我对如何从用户输入获取值并实现到程序感到困惑。

这是我的程序框架

public class TcpServerCompareCSV extends Frame implements ActionListener , WindowListener  {


   private Label lblPort;    // declare component Label
   private TextField tfPort; // declare component TextField    
   private int port;     // port number



   /** WindowEvent handlers */
   // Called back upon clicking close-window button
   @Override
   public void windowClosing(WindowEvent e) {
      System.exit(0);  // terminate the program
   }




   //constructor for frame
   public TcpServerCompareCSV () {
      setLayout(new FlowLayout());
         // "this" Frame sets its layout to FlowLayout, which arranges the components
         //  from left-to-right, and flow to next row from top-to-bottom.

      lblPort = new Label("Port"); // construct Label
      add(lblPort);                   // "this" Frame adds Label

      tfPort = new TextField("0", 10); // construct TextField
      tfPort.setEditable(true);       //edit text
      add(tfPort);                     // "this" Frame adds tfCount



      tfPort.addActionListener(this); // for event-handling

      setTitle("compare");  // "this" Frame sets title
      setSize(250, 100);        // "this" Frame sets initial window size
      setVisible(true);         // "this" Frame shows


      addWindowListener(this);
        // "this" Frame fires WindowEvent its registered WindowEvent listener
        // "this" Frame adds "this" object as a WindowEvent listener

   }




   /** ActionEvent handler - Called back when user clicks the button. */
   @Override
   public void actionPerformed(ActionEvent evt) {
    // Get the String entered into the TextField tfPort, convert to int
      port = Integer.parseInt(tfPort.getText());

   }





   /** The entry main() method */

public static void main(String[] args) throws IOException{

      // Invoke the constructor to setup the GUI, by allocating an instance
    TcpServerCompareCSV app = new TcpServerCompareCSV();

Answer 1

你的代码不完整，所以我不得不猜测一些事情，尤其是关于你的“已制作”程序是什么样的。

假设你在一个类中有一个命令行程序，它开始像：

public class AlreadyMade
{
  public static void main(String[] arguments)
  {
    AlreadyMade am = new AlreadyMade();
    am.goToIt(arguments[0], arguments[1]);
  }

  public void goToIt(String s1, String s2)
  {
    // insert logic here for what to do with your port number and location
  }
}

在这种情况下，您可以从GUI调用goToIt（）方法，可能来自actionPerformed方法，就像在AlreadyMade类中从main调用它一样：

...
AlreadyMade am = new AlreadyMade();
am.goToIt(tfPort.getText(), tfFileLocation.getText());  // assume tfFileLocation, etc.
...

我也不得不猜测这是你想知道的;如果没有，至少你知道它想要知道什么，并可以改进这个问题。

java gui swing用户操作输入

1 个答案: