Question

I have a tcp server which is not in java also its a hardware device , I need to send and receve the data ,

I am connecting with server and sending some configuration data using following code

         this.clientSocket=new Socket("198.168.1.17",9999);
        this.os=new DataOutputStream(this.clientSocket.getOutputStream());
        this.in=new DataInputStream(this.clientSocket.getInputStream());
        System.out.println("Conncted");


          char data[]={0x03,0x03,0x00};
            byte b[]=new byte[data.length];
          for (int i = 0; i < b.length; i++) {
              b[i] = (byte) data[i];
             }
            try {
                os.write(b);

Device receives data correctly , now in my tcp client i am not able to receive data , though i write following code just after above code

            int size =in.available();
                byte data1[]=new byte[size];
              //  in.read(data1);
                String str=new String(data1);
                System.out.println("Reading data:"+str);

It only shows reading data , and string has not data
also i tried about code in thread

      public void run(){
try{
    while(true){
        int size =in.available();
        byte data[]=new byte[size];
        in.read(data);
        String str=new String(data);
        System.out.println("Reading data:"+str);



    }

in thread it only shows reading data ,
Please help how can i get data from the server also please note server is built in i can not change the server code

Answer 1

what available() method do in code “int size =in.available();”????????

Solution may be:
available() method return 0 so you are not able to receive data.