Deeplearning4j UI server failed to listen on port 9000

[codenamewei]

Failed to run program that uses DL4J Training UI
Here's the error

[NazurahK0501]

There are two steps to solve this issue:

1. Trace and close program which listening to port 9000.
   Solution at https://github.com/CertifaiAI/CertifAI-Knowledge-Base/wiki/Terminate-Port-9000
2. Change current program port number to another port.
   The solution can retrieve at https://github.com/CertifaiAI/CertifAI-Knowledge-Base/wiki/Change-UIServer-Port-for-DL4J-Training-Visualization