MemoryManagerMXBean
, PlatformManagedObject
GarbageCollectorMXBean
public interface GarbageCollectorMXBean extends MemoryManagerMXBean
memory manager
. A Java virtual machine may have one or more instances of the implementation class of this interface. An instance implementing this interface is an MXBean that can be obtained by calling the ManagementFactory.getGarbageCollectorMXBeans()
method or from the platform MBeanServer
method.
The ObjectName
for uniquely identifying the MXBean for a garbage collector within an MBeanServer is:
It can be obtained by calling thejava.lang:type=GarbageCollector
,name=
collector's name
PlatformManagedObject.getObjectName()
method. A platform usually includes additional platform-dependent information specific to a garbage collection algorithm for monitoring.Modifier and Type | Method | Description |
---|---|---|
long |
getCollectionCount() |
Returns the total number of collections that have occurred. |
long |
getCollectionTime() |
Returns the approximate accumulated collection elapsed time in milliseconds. |
getMemoryPoolNames, getName, isValid
getObjectName
long getCollectionCount()
-1
if the collection count is undefined for this collector.long getCollectionTime()
-1
if the collection elapsed time is undefined for this collector. The Java virtual machine implementation may use a high resolution timer to measure the elapsed time. This method may return the same value even if the collection count has been incremented if the collection elapsed time is very short.
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Documentation extracted from Debian's OpenJDK Development Kit package.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.management/java/lang/management/GarbageCollectorMXBean.html