Error 'java.net.SocketException Too many open files' when I run a Java application that uses TCP sockets?

Issue

• Error 'java.net.SocketException: Too many open files' when I run a Java application that uses TCP sockets?
• We are getting a too many open files exception on the Jboss EAP server. The below is the entries that we have on sysctl file:

[root@user123 ~]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key.

• Also, when we observe the number of open files based on the process id for JBOSS EAP, it is 1082.
• Let us know if any more inputs are needed to resolve this issue.

error: "net.bridge.bridge-nf-call-iptables" is an unknown key
error: "net.bridge.bridge-nf-call-arptables" is an unknown key
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.forwarding = 0
error: permission denied on key 'net.ipv4.conf.all.mc_forwarding'
net.ipv4.conf.default.log_martians = 1
net.ipv4.conf.all.log_martians = 1
net.ipv4.tcp_max_syn_backlog = 4096