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  1. package chat2;
  2.  
  3. import java.io.IOException;
  4. import java.io.ObjectOutputStream;
  5. import java.math.BigInteger;
  6. import java.net.Socket;
  7. import java.net.UnknownHostException;
  8. import java.util.Random;
  9. import javax.swing.JFrame;
  10.  
  11. public class chat_client extends JFrame{
  12.   String name = "無名1";
  13.   String ip = "127.0.0.1";
  14.   Socket sock;
  15.   BigInteger key_num = new BigInteger(55,new Random());
  16.   ObjectOutputStream oos;
  17.   public static void main(String[] args) {
  18.     // TODO Auto-generated method stub
  19.     chat_client client = new chat_client();
  20.   }
  21.  
  22.   chat_client(){
  23.     SendClient();
  24.   }
  25.  
  26.   private void SendClient(){
  27.     try {
  28.     object_data data = new object_data();
  29.       data.setuser_name(name);
  30.       data.setnor_chat("測試訊息");
  31.       data.setkey_num(key_num);
  32.  
  33.       sock = new Socket(ip,8888);
  34.       //client輸出串流(client to server)
  35.       oos = new ObjectOutputStream(sock.getOutputStream());
  36.       oos.writeObject(data);
  37.       oos.flush();
  38.       oos.close();
  39.       oos = null;
  40.       data = null;
  41.     } catch (UnknownHostException e) {
  42.       // TODO Auto-generated catch block
  43.       e.printStackTrace();
  44.     } catch (IOException e) {
  45.       // TODO Auto-generated catch block
  46.       e.printStackTrace();
  47.     }
  48.   }
  49. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:11: error: class chat_client is public, should be declared in a file named chat_client.java
public class chat_client extends JFrame{
       ^
Main.java:28: error: cannot find symbol
    object_data data = new object_data();
    ^
  symbol:   class object_data
  location: class chat_client
Main.java:28: error: cannot find symbol
    object_data data = new object_data();
                           ^
  symbol:   class object_data
  location: class chat_client
3 errors
stdout
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Standard output is empty
https://ideone.com/F4mAnQ
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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