OperatingSystemMXBean getProcessCpuTime() in JDK7+

Question

I see code for jdk6 that has the following OperatingSystemMXBean method :

OperatingSystemMXBean osbean = 
    (OperatingSystemMXBean)      ManagementFactory.getOperatingSystemMXBean();

long prevProcessCpuTime = osbean.getProcessCpuTime();

In the JDK7 docs there appears not to be any mention of them. http://docs.oracle.com/javase/7/docs/api/java/lang/management/OperatingSystemMXBean.html

Are there any equivalents to the jdk6 method elsewhere in the jdk7+ ?

https://docs.oracle.com/javase/8/docs/jre/api/management/extension/com/sun/management/OperatingSystemMXBean.html#getProcessCpuTime-- — jmj, Sep 16 '15 at 23:44
@JigarJoshi Ah so jdk8 brought back that method - and added some new ones. thx! Feel free to make this an answer. — WestCoastProjects, Sep 16 '15 at 23:49
https://docs.oracle.com/javase/7/docs/jre/api/management/extension/com/sun/management/OperatingSystemMXBean.html#getProcessCpuTime%28%29 — jmj, Sep 16 '15 at 23:50

score 1 · Accepted Answer · answered Sep 16 '15 at 23:51

1

You are looking at wrong place in API doc, It is there in 7

https://docs.oracle.com/javase/7/docs/jre/api/management/extension/com/sun/management/OperatingSystemMXBean.html#getProcessCpuTime%28%29

answered Sep 16 '15 at 23:51

jmj

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ah ok there are two versions of that interface: one in `java.lang.management` and the other in `com.sun.management` – WestCoastProjects Sep 16 '15 at 23:54
There is more to it .. I added an answer with the required cast. – WestCoastProjects Sep 17 '15 at 00:04

score 1 · Answer 2 · answered Sep 17 '15 at 00:04

1

It is required to cast the result:

val obs = java.lang.management.ManagementFactory
           .getOperatingSystemMXBean.asInstanceOf
          [com.sun.management.OperatingSystemMXBeanOperatingSystemMXBean]

answered Sep 17 '15 at 00:04

WestCoastProjects

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Is this actually java? Seems more like Scala. – takendarkk Apr 20 '17 at 19:41
y but this is an api call- does not matter if invoked scala, groovy, clojure, jruby.. – WestCoastProjects Apr 20 '17 at 22:47

OperatingSystemMXBean getProcessCpuTime() in JDK7+

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