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how to give port number for socket class

 
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how to give port number in socket class?

Socket sc=new Socket(hostname,portnumber);

can anybody tell about hostname,portnumber
 
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If you look at the JavaDoc for Socket, it says:

public Socket(String host, int port)

 
vijayakumar durai
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this tutorial not explain how to give port number i gave port number 1748 it give error
java.net.connectionexception connection refuse can any body tell how to give port number?
 
Joe Ess
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"java.net.connectionexception connection refuse" indicates that either there is no service listening to the port you have specified or that the port is blocked. You are passing the port number correctly, there's nothing for it to connect to.
 
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