Need help with opening DatagramSocket

Question

Hello I want to make a socket connection this is my code
public void run()
int s=0;
MakeConnection(s);
In MakeConnection I have thisvoid MakeConnection(int s) throws IOException
int port =1234;
DatagramSocket client = new DatagramSocket(port);
When I compile this code this is said
unreported exception java.io.IOException; must be caught or declared to be thrown.
Can anyone help me with this fault.
And is it possible to get
int s = client;
Because when I do it with c I can do
int s;
s = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
en than s is 10 on my computer and in my java code I need to receive s=10 too.

Answer 1

Do you know what exceptions are? If not, read about them in the Java Tutorial:
http://java.sun.com/docs/books/tutorial/essential/exceptions/index.html
In the method run(), you call the method MakeConnection(), which might throw an IOException.
Since IOException is a checked exception, you must in the method run() specify what you're going to do when an IOException happens. You must either catch the exception (put the call to MakeConnection in a try / catch block) or indicate that run() can throw an IOException by specifying it at the beginning of the method:
public void run() throws IOException { ...
But note that you'll just be moving the problem to the method that calls run(). Somewhere in your program you must catch and handle the exception.