How to understand top and htop results for tomcat with java threads

Question

Using htop and atop commands show that Java eats much CPU. Here are htop results:

.

As I understood, the main Tomcat thread with PID=17649 takes 248% of all CPUs. And then other java threads created inside app take small amount of CPU like 4-3%

But when I run top -H -p 17649, then I see:

And there isn't any java thread with high CPU usage.

My questions are:

1. How to find LWP (light process id) to map it to jstack output?
2. Do htop results mean that all CPU uses by Tomcat itself?
3. Why atop or ps -eLo pid,lwp,pcpu,vsz|grep 17649 |sort -n -k 3 -r |head -n 10 doesn't show thread with high CPU usage?

Thanks.