8230648: Replace @exception tag with @throws in java.base Summary: Minor coding style update of javadoc tag in any file in java.base Reviewed-by: prappo, lancea

8231242: G1CollectedHeap::print_regions_on() does not print description for "OA" and "CA" regions Reviewed-by: tschatzl, jiangli Contributed-by: huangjia@loongson.cn

8216565: Specifying the same path creates a new directory in JFR.configure Reviewed-by: ysuenaga, egahlin

Accounted for experimental events in TestLookForUntestedEvents

8230768: Arrays of SoftReferences in MethodTypeForm should not be @Stable Reviewed-by: mchung

8230759: ZGC: Fix integer types Reviewed-by: pliden

8230758: ZGC: Add missing precompiled include and fix friend declaration Reviewed-by: tschatzl, pliden

8230756: ZGC: Remove redundant memset in ZStatValue Reviewed-by: tschatzl, pliden

8231149: (fs) Small verbiage errors in java.nio.file package documentation Reviewed-by: lancea, alanb

8231244: Shenandoah: all-roots heap walking misses some weak roots Reviewed-by: zgu, rkennke

8231198: Shenandoah: heap walking should visit all roots most of the time Reviewed-by: zgu, rkennke

8231197: Shenandoah: JVMTI heap walking cleanup crashes with NULL forwardee Reviewed-by: zgu, rkennke

8230814: Enable SAX ContentHandler to handle XML Declaration Reviewed-by: lancea, dfuchs, alanb

8231113: Remove CollectedHeap::check_oop_location() Reviewed-by: stefank, eosterlund, tschatzl

Fix gc/class_unloading/.. tests

Fix various test issues.