Threads is it equal to no. of open sockets

[vicky]

Team,
In tomcat does the no . of open sockets on http port (netstat -anlp|grep 8080) 
is it equal to number of threads in use in tomcat .
Actually i want to understand how & when i can say that the all threads in a 
tomcat are fully utilized that why it is responding slow. Please help in 
understand.