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  1. package object_ex;
  2.  
  3. import java.awt.BorderLayout;
  4. import java.awt.Frame;
  5. import java.awt.TextArea;
  6. import java.awt.TextField;
  7. import java.awt.event.ActionEvent;
  8. import java.awt.event.ActionListener;
  9. import java.awt.event.WindowAdapter;
  10. import java.awt.event.WindowEvent;
  11. import java.io.IOException;
  12. import java.io.ObjectInputStream;
  13. import java.io.ObjectOutputStream;
  14. import java.net.Socket;
  15. import java.net.UnknownHostException;
  16.  
  17. public class Chat_Client extends Frame{
  18.  
  19.   TextField textField=new TextField("");//輸入欄位
  20.   TextArea textArea=new TextArea();//顯示欄位
  21.   String str=null;
  22.   object_data data = new object_data();
  23.  
  24.   Socket client;
  25.   ObjectOutputStream output=null;
  26.   ObjectInputStream input=null;
  27.   boolean isConnected=false;
  28.  
  29.   public static void main(String[] args) {
  30.     new Chat_Client().launchFrame();
  31.   }
  32.  
  33.  
  34.   public Chat_Client(){
  35.     connect();
  36.     new Thread(new ClientOwnThread()).start();
  37.   }
  38.  
  39.   public void launchFrame(){
  40.     this.setLocation(400,300);
  41.     this.setSize(300,300);
  42.     this.add(textArea,BorderLayout.NORTH);
  43.     this.add(textField,BorderLayout.SOUTH);
  44.     this.pack();
  45.     textArea.setEditable(false);
  46.     this.setVisible(true);
  47.  
  48.     this.addWindowListener(new WindowAdapter(){
  49.       public void windowClosing(WindowEvent e){
  50.         System.exit(0);
  51.       }
  52.     });
  53.  
  54.     textField.addActionListener(new TextFieldListener());
  55.   }
  56.  
  57.   private void connect(){
  58.     try {
  59.       client=new Socket("127.0.0.1",8888);
  60.       output=new ObjectOutputStream(client.getOutputStream());
  61.       input=new ObjectInputStream(client.getInputStream());
  62.       isConnected=true;
  63.     } catch (UnknownHostException e) {
  64.       e.printStackTrace();
  65.     } catch (IOException e) {
  66.       e.printStackTrace();
  67.     }
  68.   }
  69.  
  70.   private void disConnect(){
  71.  
  72.     try {
  73.       if(output!=null) output.close();
  74.       if(input!=null) input.close();
  75.       if(client!=null) client.close();
  76.     } catch (IOException e) {
  77.       // TODO Auto-generated catch block
  78.       e.printStackTrace();
  79.     }
  80.   }
  81.  
  82.   class ClientOwnThread implements Runnable{
  83.     public void run() {
  84.       try {
  85.         while(isConnected){
  86.           data = (object_data)input.readObject();
  87.           String str = data.getchat();
  88.           //String str=(String)input.readObject();
  89.           textArea.append(str+"\n");
  90.         }
  91.       } catch (Exception e) {
  92.         e.printStackTrace();
  93.       }
  94.       finally{
  95.         disConnect();
  96.       }
  97.     }
  98.   }
  99.  
  100.   private class TextFieldListener implements ActionListener{
  101.     public void actionPerformed(ActionEvent arg0) {
  102.       data.setchat(textField.getText().trim());
  103.       //str=textField.getText().trim();
  104.       textField.setText("");
  105.       try {
  106.         output.writeObject(data);
  107.         output.flush();
  108.       } catch (IOException e) {
  109.         // TODO Auto-generated catch block
  110.         e.printStackTrace();
  111.       }
  112.  
  113.     }
  114.   }
  115. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
Main.java:17: error: class Chat_Client is public, should be declared in a file named Chat_Client.java
public class Chat_Client extends Frame{
       ^
Main.java:22: error: cannot find symbol
  object_data data = new object_data();
  ^
  symbol:   class object_data
  location: class Chat_Client
Main.java:22: error: cannot find symbol
  object_data data = new object_data();
                         ^
  symbol:   class object_data
  location: class Chat_Client
Main.java:86: error: cannot find symbol
          data = (object_data)input.readObject();
                  ^
  symbol:   class object_data
  location: class Chat_Client.ClientOwnThread
4 errors
stdout 
Standard output is empty
https://ideone.com/GOduWD
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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