Re: client

From:
Lew <lew@lewscanon.com>
Newsgroups:
comp.lang.java.help
Date:
Mon, 29 Oct 2007 13:09:31 -0400
Message-ID:
<jICdncWuXZ9WjrvanZ2dnUVZ_j2dnZ2d@comcast.com>
heyheyhey wrote:

trying to get a working client to encode name and number, is this right?


There are many problems, many of which will be fixed by adhering to the advice of
<http://www.physci.org/codes/sscce.html>
..

java.io.ObjectOutputStream


This will turn out not to be what you want.

java.io.ByteArrayOutputStream


Ditto - consider just using the socket stream.

public static void main(String args[]){

//creates a string for customers name called Batman
String s= "Batman"


This statement will not compile.

//Converts customer name into byte sequence
byte[] B = S.getBytes("US-ASCII");


Will not compile.

//Creates a string for CC number
String CC= 1212121212121212


Will not compile.

//Convert credit card number into byte sequence
byte[] B =CC;getbytes("US-ASCII");


Will not compile.

//create datagram socket
aSocket = new DatagramSocket();


Is there an class variable called aSocket? If so, that's a bad idea. If not,
this statement will not compile.

//Host name
InetAddress address = InetAddress.getByName("localhost")


Will not compile.

//set port number
public function set ServerPort (3590 : int)


There is no keyword 'function' in Java. Method names should begin with a
lower-case letter. "3590 : int" isn't even remotely Java syntax.

//create datagram packet
DatagramPacket request =
new DatagramPacket(m, args[0].length(), aHost, serverPort);


args[0] and the .length() call on it could throw a RuntimeException.

;
// Send it
aSocket.send(request);


Even assuming you make this into a legitimate call, you still should catch the
potential Exceptions and deal with them appropriately.

--
Lew

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