Interface GarbageCollectorMXBean

All Superinterfaces:: GarbageCollectorMXBean, MemoryManagerMXBean, PlatformManagedObject

public interface GarbageCollectorMXBean extends GarbageCollectorMXBean

Platform-specific management interface for a garbage collector which performs collections in cycles.

This platform extension is only available to the garbage collection implementation that supports this extension.

Since:: 1.5

Method Summary

Modifier and Type	Method	Description
`GcInfo`	`getLastGcInfo()`	Returns the GC information about the most recent GC.

Methods declared in interface GarbageCollectorMXBean

getCollectionCount, getCollectionTime

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.

Methods declared in interface MemoryManagerMXBean

getMemoryPoolNames, getName, isValid

Modifier and Type	Method	Description
`String[]`	`getMemoryPoolNames()`	Returns the name of memory pools that this memory manager manages.
`String`	`getName()`	Returns the name representing this memory manager.
`boolean`	`isValid()`	Tests if this memory manager is valid in the Java virtual machine.

Methods declared in interface PlatformManagedObject

getObjectName

Modifier and Type	Method	Description
`ObjectName`	`getObjectName()`	Returns an `ObjectName` instance representing the object name of this platform managed object.

Method Details

getLastGcInfo

GcInfo getLastGcInfo()

Returns the GC information about the most recent GC. This method returns a GcInfo. If no GC information is available, null is returned. The collector-specific attributes, if any, can be obtained via the CompositeData interface.

MBeanServer access: The mapped type of GcInfo is CompositeData with attributes specified in GcInfo.

Returns:: a GcInfo object representing the most GC information; or null if no GC information available.

© 1993, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.