Debian 8 unable to open port: 9042

Question

I want to open port 9042. But unfortunately the port is still closed

root@debian:/# iptables -A INPUT -p tcp --dport 9042 --j ACCEPT
root@debian:/# iptables-save

output of iptables -L

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:9042

output of nmap hostname

22/tcp   open  ssh
80/tcp   open  http
111/tcp  open  rpcbind
3306/tcp open  mysql

output of netstat -pln

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

tcp        0      0 0.0.0.0:7199            0.0.0.0:*               LISTEN      1117/java
tcp        0      0 127.0.0.1:59601         0.0.0.0:*               LISTEN      1117/java
tcp        0      0 127.0.0.1:9042          0.0.0.0:*               LISTEN      1117/java

still I cannot connect to the port 9042;

I tried with another port 5555 i still dont see the when i do nmap or netstat.