When a user measure the num. of GCs, the result in verbose:gc and mxbeans seems different.

REPRODUCING and BEHAVIOR:
The attached test progtam, GCBeanTEST.java tries to allocate 4M memory 100 times.

1) Compile the test program and invoke the following command line.
   java -Xms64m -XX:+UseSerialGC -XX:NewRatio=12 -verbose:gc GCBeanTEST
   NOTE:
      -XX:+UseSerialGC and -XX:NewRatio=12 is added to avoid that runtime system
      considers the PC as "server" machine.(to avoid auto-configuration)

The following message will appear

K:\shares2\gc>java -Xms64m -XX:+UseSerialGC -XX:NewRato=12 -verbose:gc GCBeanTEST
[GC 285K->133K(65088K), 0.0046967 secs]
[Full GC 133K->133K(65088K), 0.0156947 secs]
[GC 4229K->4229K(65088K), 0.0006263 secs]
[Full GC 4229K->133K(65088K), 0.0160146 secs]
[GC 4229K->4229K(65088K), 0.0004048 secs]
[Full GC 4229K->133K(65088K), 0.0281636 secs]
[GC 4229K->4229K(65088K), 0.0003623 secs]
[Full GC 4229K->133K(65088K), 0.0186784 secs]
[GC 4229K->4229K(65088K), 0.0003084 secs]
[Full GC 4229K->133K(65088K), 0.0153316 secs]
..........
sun.management.GarbageCollectorImpl@82c01f, sun.management.GarbageCollectorImp
@133796]

----- Copy -----
sun.management.GarbageCollectorImpl@82c01f
GarbageCollectorMXBean.getName():Copy
GarbageCollectorMXBean.getCollectionCount():100
GarbageCollectorMXBean.getCollectionTime():1962
------------------------------------

----- MarkSweepCompact -----
sun.management.GarbageCollectorImpl@133796
GarbageCollectorMXBean.getName():MarkSweepCompact
GarbageCollectorMXBean.getCollectionCount():0
GarbageCollectorMXBean.getCollectionTime():0
------------------------------------

INVESTIGATION:
  The messages by -verbose:gc
...
 [GC 4229K->4229K(65088K), 0.0003084 secs]
 [Full GC 4229K->133K(65088K), 0.0153316 secs]
....
  says GC anf Full GC occurs 100 times respectively.
  However, messages by mxbeans shows that CopyGC occurs 100 times

   GarbageCollectorMXBean.getCollectionCount():100

  and FullGC(MarkSweepCompact) occurs "0" times.(FullGC does not occur.)

   GarbageCollectorMXBean.getCollectionCount():0

----- Copy -----
sun.management.GarbageCollectorImpl@82c01f
GarbageCollectorMXBean.getName():Copy
GarbageCollectorMXBean.getCollectionCount():100
GarbageCollectorMXBean.getCollectionTime():1962
------------------------------------

----- MarkSweepCompact -----
sun.management.GarbageCollectorImpl@133796
GarbageCollectorMXBean.getName():MarkSweepCompact
GarbageCollectorMXBean.getCollectionCount():0
GarbageCollectorMXBean.getCollectionTime():0
------------------------------------

EXPECTED BEHAVIOR:
  FullGC seems to occur 100 times, but mxbeans says FullGC does not occur.
  hHose results shgould be the same.