AWS Ubuntu tomcat not connection from web browser on 8080

I run one a ubuntu instance in AWS. After startup the tomcat server, but I cant access it via public network.

 netstat -atnp |grep LISTEN 

By checking it.

tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      10532/java  

And the security I set to all allow all.

All traffic
All
All
0.0.0.0/0

Is it anything i am missing? Thank :d