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Questions tagged [mxbean]

The MXBean concept provides a simple way to code an MBean that only references a predefined set of types, the ones defined by javax.management.openmbean. In this way, you can be sure that your MBean will be usable by any client, including remote clients, without any requirement that the client have access to model-specific classes representing the types of your MBeans.

The MXBean concept provides a simple way to code an MBean that only references a predefined set of types, the ones defined by javax.management.openmbean. In this way, you can be sure that your MBean will be usable by any client, including remote clients, without any requirement that the client have access to model-specific classes representing the types of your MBeans.

Click Here for Oracle's Documentation of MXBean.

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How to capture thread dump programatically using JAVA Code?

I want to generate thread dump through java code, I tried using ThreadMXBean for this but I am not getting the thread dump in the proper format as we are getting using jstack command. Please can any one provide some help..is their any other way to…
Rishi Arora
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Alternate of getSystemLoadAverage() for Windows?

I am working on with some code to monitor Cpu load using Java. I am using following code in my app to get system load public static double getCPULoad() { OperatingSystemMXBean osMBean = (OperatingSystemMXBean)…
Navdeep Singh
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Java: GarbageCollectorMXBean getCollectionCount throws java.io.IOException: The client has been closed

I am writing a Java application where I am using Java GarbageCollectorMXBean APIs to get the collection count at regular intervals (for every 5 seconds). Below is the program I have written to do the task. import java.io.IOException; import…
Raghavendra Nilekani
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Abstract types in MXBean operation signatures

I'm trying to create an MXBean operation which would return an abstract type w/o properties (the actual type and its attributes are to be determined at run time). My data model can be simply put as follows: public interface I extends…
Bass
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Java: How to pass parameters into Thread method using lambda expression?

I've seen a lot of questions on threads and impelementing them using interface, but there doesn't seem to be a lot of updated information on how to do it with a lambda expression. I'm kind of new to this so I'm not sure. The typical one looks…
Ymi
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Unexpected behavior from JMX.newMBeanProxy()

I get a ThreadMXBean proxy for remote JVM as ObjectName objName = ManagementFactory.getThreadMXBean().getObjectName() ; ThreadMXBean proxy = JMX.newMBeanProxy(MBeanServerConnection, objName, ThreadMXBean.class); However, when I call the…
RRM
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Why sun.management.OperatingSystemImpl is package visible?

This class has really helpful methods. I can call them by reflection. But why I forced to do it? I would like to cast OperatingSystemMXBean to OperatingSystemImpl and call them normal way. Thanks in advance.
Vitaly
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NPE when unregistering an MXBean from multiple MBean servers

I have an MXBean instance which is registered in 2 MBean servers: @MXBean(true) public interface I { // ... } public final class C extends StandardMBean implements I { public C() { super(I.class, JMX.isMXBeanInterface(I.class)); …
Bass
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JXM MXBean custom attributes

I have a problem with MXBean custom types and I am not able to handle it. This is my java structure, that involves Map< enum, OtherThing> attribute PPV and its interface public class PPV implements PPVMXBean { public enum EnumPV { PV1, …
javinsnc
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What does GarbageCollectorMXBean::getCollectionCount means?

The javadoc says returns the total number of collections that have occurred, is it since the start of the JVM? I am using G1GC, and I see values are going up & down for e.g. at T1 - 250 and T2 - 91 and T3 - 150 so I doubt it is from the start of the…
CrazyCoder
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Reading and parsing stream from FlightRecorderMXBean

I use the following code in order to start JFR recording and to save results in file. The file is indeed created, but how to parse it? I thought it should be jfr file type, but jdk.jfr.consumer.RecordingFile fails to parse it ("java.io.IOException:…
user9517026
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MBean non showing if registered on Weblogic Cluster

the scenario is: Application Server: Weblogic 12.2.1.2 Application: an Entenprise Application The working scenario: Application deployed on the Admin Server. JConsole correctly shows my MXBean. The NOT working scenario: Application deployed on…
Antonio Petricca
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How to force a first generation GC in Java?

With the System.gc() method it is possible to force a full GC run. This is very expensive. Is there an option to force the first generation GC only? My application is currently running on Java 11. I am thinking of something like…
Horcrux7
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RuntimeMXBean when querying from jolokia api with JDK 11, it is returning 500 internal server Error in response

I have java application which uses JDK 11 and attached Jolokia-1.6.2 agent to it which I used to query Mbeans and get metrics but when I query for this mbean "java.lang:type=Runtime" it is returning 500 You can find full json error message in this…
Akilan M
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GarbageCollectorMXBean getCollectionCount :: Returns the total number of collections that have occurred

The doc for GarbageCollectorMXBean getCollectionCount says Returns the total number of collections that have occurred, is it from the start of the time of start of JVM? From what I am seeing it looks like the number of GCs from the last poll on…
Nisarg
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