>jdb -connect com.sun.jdi.SocketAttach:port=5555,hostname=localhost
Set uncaught java.lang.Throwable
Set deferred uncaught java.lang.Throwable
Initializing jdb ...
> stop at my.Endless:15
Set breakpoint my.Endless:15
>
Breakpoint hit: "thread=main", my.Endless.main(), line=15 bci=26

main[1] exit

>jdb -connect com.sun.jdi.SocketAttach:port=5555,hostname=localhost
Set uncaught java.lang.Throwable
Set deferred uncaught java.lang.Throwable
Initializing jdb ...
> stop at my.Endless:15
Set breakpoint my.Endless:15
> // and debugger never stop