public interface GarbageCollectorMXBean extends MemoryManagerMXBean
A Java virtual machine may have one or more instances of
the implementation class of this interface.
An instance implementing this interface is
that can be obtained by calling
ManagementFactory.getGarbageCollectorMXBeans() method or
platform MBeanServer method.
ObjectName for uniquely identifying the MXBean for
a garbage collector within an MBeanServer is:
It can be obtained by calling the
PlatformManagedObject.getObjectName()method. A platform usually includes additional platform-dependent information specific to a garbage collection algorithm for monitoring.
long getCollectionCount()Returns the total number of collections that have occurred. This method returns
-1if the collection count is undefined for this collector.
- the total number of collections that have occurred.
long getCollectionTime()Returns the approximate accumulated collection elapsed time in milliseconds. This method returns
-1if 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.
- the approximate accumulated collection elapsed time in milliseconds.