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.
ManagementFactory#getPlatformMXBeans(Class), MemoryMXBean, JMX Specification., Ways to Access MXBeans
| Modifier and Type | Method and Description |
|---|---|
| public long | Returns: the total number of collections that have occurred.Returns the total number of collections that have occurred. |
| public long | Returns: the approximate accumulated collection elapsed time in milliseconds.Returns the approximate accumulated collection elapsed time in milliseconds. |
| getCollectionCount | back to summary |
|---|---|
| public long getCollectionCount() Returns the total number of collections that have occurred.
This method returns
| |
| getCollectionTime | back to summary |
|---|---|
| public long getCollectionTime() Returns the approximate accumulated collection elapsed time
in milliseconds. This method returns 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.
| |