Error sending files via Java Socket

Question

Java server.

   package javaapplication48;

   import java.net.*;
   import java.io.*;

   public class Servidor {

      public static void main(String[] args) throws IOException {
         ServerSocket servidor = new ServerSocket(5656);

         Socket sv = servidor.accept();

         ObjectInputStream out = new ObjectInputStream(sv.getInputStream());

         FileOutputStream file = new 
   FileOutputStream("C:\\Users\\DeveloperEng\\Documents\\newOrder.xml");

         byte[] buf = new byte[4096];

         while (true) {
            int len = out.read(buf);
            if (len == -1) break;
            file.write(buf, 0 , len);
         }
     }   
  }

---

Java client.

  package javaapplication48;

  import java.net.*;
  import java.io.*;

  public class Cliente {

    public static void main(String[] args) throws IOException {
        Socket cliente = new Socket("127.0.0.1", 5656);

        ObjectOutputStream out = new 
  ObjectOutputStream(cliente.getOutputStream());

        FileInputStream file = new 
  FileInputStream("C:\\Users\\DeveloperEng\\Documents\\order.xml");

        byte[] buf = new byte [4096];

        while (true) {
           int len = file.read(buf);
           if (len == -1) break;
           out.write(buf, 0, len);
       }
   }   
}

---

In Netbeans, I run Server.java first and then Client.java. But it generates the following error:

Exception in thread "main" java.net.Bindexception: Address already in use: Jvm_bind at java.net.Dualstackplainsocketimpl.bind0(Native Method) at java.net.Dualstackplainsocketimpl.socketBind(Dualstackplainsocketimpl.java:106) at java.net.Abstractplainsocketimpl.bind(Abstractplainsocketimpl.java:387) at java.net.Plainsocketimpl.bind(Plainsocketimpl.java:190) at java.net.Serversocket.bind(Serversocket.java:375) at java.net.Serversocket.(Serversocket.java:237) at java.net.Serversocket.(Serversocket.java:128) at javaapplication48.Servidor.main(Server.java:9) C: Users Developereng Appdata Local Netbeans Cache 8.2 executor-snippets run.xml:53:

Java returned: 1 BUILD FAILURE (total time: 0 seconds)

If anyone can tell me why it generates this flaw and, if possible, help me correct code, I would be very grateful!!

Answer 1

Is there any process on your machine listening at the door 5656. Whereas you are using Windows:

netstat -ano | find "5656"

lists the listening process at the door 5656. Then use

taskkill -pid "pid do processo" /f

to kill the process by eavesdropping on the door 5656.