Thread suspend/resume
- deprecated in JDK 1.2
- deprecated for removal in Java 14
- degraded to throw UOE in Java 20

ThreadGroup suspend/resume
- deprecated in JDK 1.2
- deprecated for removal in Java 14
- degraded to throw UOE in Java 19

It's time to remove these methods.

Corpus analysis of 176180458 classes in 484751 artifacts found:

- no usages of ThreadGroup.suspend/resume except for artifacts that had copies of java.lang.ThreadGroup
- 87 uses of Thread.suspend
- 86 uses of Thread.resume