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java.net.ConnectException: Connection refused: connect

 
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static Socket clientSocket = null;

int port_number = 8888;
String host="localhost";

clientSocket = new Socket(host, port_number);


Please help ?

 
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What service is listening to port 8888 on your local machine? My guess would be none at all, or your firewall is blocking access to it.
 
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A simple way to test it would be - telnet localhost 8888
 
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