Can confirm I've only gotten the jvm to segfault when writing jni code -- never when writing vanilla java. To be generous to the OP though, perhaps the person who made the original comment was trying to write system code in java with lots of jni to access syscalls, or perhaps earlier versions of the jvm were less stable. The first jvm I ever used was 6, so I can't personally speak to earlier version.

I've found two segfaults in a 10+ year Java (well, actually mostly Scala) career (both known JVM bugs). It's rare, but possible.

I luv C and have shipped tons of it in the past successfully enough but... to be frank C was, in effect, literally designed to cause/allow/enable segfaults. as a by-product of the "wild west" power of its & and * operators.