PlatformManagedObject
OperatingSystemMXBean
, UnixOperatingSystemMXBean
public interface OperatingSystemMXBean extends PlatformManagedObject
A Java virtual machine has a single instance of the implementation class of this interface. This instance implementing this interface is an MXBean that can be obtained by calling the ManagementFactory.getOperatingSystemMXBean()
method or from the platform MBeanServer
method.
The ObjectName
for uniquely identifying the MXBean for the operating system within an MBeanServer is:
java.lang:type=OperatingSystem
It can be obtained by calling the PlatformManagedObject.getObjectName()
method. This interface defines several convenient methods for accessing system properties about the operating system on which the Java virtual machine is running.
Modifier and Type | Method | Description |
---|---|---|
String |
getArch() |
Returns the operating system architecture. |
int |
getAvailableProcessors() |
Returns the number of processors available to the Java virtual machine. |
String |
getName() |
Returns the operating system name. |
double |
getSystemLoadAverage() |
Returns the system load average for the last minute. |
String |
getVersion() |
Returns the operating system version. |
getObjectName
String getName()
System.getProperty("os.name")
.SecurityException
- if a security manager exists and its checkPropertiesAccess
method doesn't allow access to this system property.String getArch()
System.getProperty("os.arch")
.SecurityException
- if a security manager exists and its checkPropertiesAccess
method doesn't allow access to this system property.String getVersion()
System.getProperty("os.version")
.SecurityException
- if a security manager exists and its checkPropertiesAccess
method doesn't allow access to this system property.int getAvailableProcessors()
Runtime.availableProcessors()
method. This value may change during a particular invocation of the virtual machine.
double getSystemLoadAverage()
If the load average is not available, a negative value is returned.
This method is designed to provide a hint about the system load and may be queried frequently. The load average may be unavailable on some platform where it is expensive to implement this method.
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.management/java/lang/management/OperatingSystemMXBean.html