GarbageCollectorMXBean (OpenJ9 JDK 11)

All Superinterfaces:

GarbageCollectorMXBean, GarbageCollectorMXBean, MemoryManagerMXBean, PlatformManagedObject

All Known Implementing Classes:

ExtendedGarbageCollectorMXBeanImpl
```
public interface GarbageCollectorMXBean
extends GarbageCollectorMXBean
```
The OpenJ9 extension interface for managing and monitoring the virtual machine's garbage collection functionality.

Since:

1.5

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`getLastCollectionEndTime()`	Returns the end time in milliseconds of the last garbage collection that was carried out by this collector.
`long`	`getLastCollectionStartTime()`	Returns the start time in milliseconds of the last garbage collection that was carried out by this collector.
`long`	`getMemoryUsed()`	Returns the amount of heap memory used by objects that are managed by the collector corresponding to this bean object.
`long`	`getTotalCompacts()`	Returns the cumulative total number of compacts that was performed by garbage collector corresponding to this bean object.
`long`	`getTotalMemoryFreed()`	Returns the cumulative total amount of memory freed, in bytes, by the garbage collector corresponding to this bean object.

Methods declared in interface com.sun.management.GarbageCollectorMXBean
getLastGcInfo

Methods declared in interface java.lang.management.GarbageCollectorMXBean
getCollectionCount, getCollectionTime

Methods declared in interface java.lang.management.MemoryManagerMXBean
getMemoryPoolNames, getName, isValid

Methods declared in interface java.lang.management.PlatformManagedObject
getObjectName

- Method Detail
  - getLastCollectionStartTime
```
long getLastCollectionStartTime()
```
    Returns the start time in milliseconds of the last garbage collection that was carried out by this collector.
    
    Returns:
    
    the start time of the most recent collection
  - getLastCollectionEndTime
```
long getLastCollectionEndTime()
```
    Returns the end time in milliseconds of the last garbage collection that was carried out by this collector.
    
    Returns:
    
    the end time of the most recent collection
  - getMemoryUsed
```
long getMemoryUsed()
```
    Returns the amount of heap memory used by objects that are managed by the collector corresponding to this bean object.
    
    Returns:
    
    memory used in bytes
  - getTotalMemoryFreed
```
long getTotalMemoryFreed()
```
    Returns the cumulative total amount of memory freed, in bytes, by the garbage collector corresponding to this bean object.
    
    Returns:
    
    memory freed in bytes
  - getTotalCompacts
```
long getTotalCompacts()
```
    Returns the cumulative total number of compacts that was performed by garbage collector corresponding to this bean object.
    
    Returns:
    
    number of compacts performed