Getting JVM information in Java code

I. Getting information about the JVM in Java

Principle, using Javasdk's own Managementfactory class to obtain.

Ii. Access to Information

1. Get the Process ID

    @Test    publicvoid  test1 () {        =  Managementfactory.getruntimemxbean ();        System.out.println (Mxb.getname ()); [Email protected]    }

2. Get additional information about Managementfactory.getruntimemxbean ()

Runtimemxbean MXB = Managementfactory.getruntimemxbean ();
Mxb.getsystemproperties () = {[email protected]} size = 56mxb.getinputarguments ()= {[email protected]} size = 5Mxb.getbootclasspath ()= "C:\Program Files\java\jdk1.8.0_161\jre\lib\resources.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\rt.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\sunrsasign.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\jsse.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\jce.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\charsets.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\jfr.jar; C:\Program files\java\jdk1.8.0_161\jre\classes;d:\applicaton\devtools\jetbrains\intellijidea\lib\rt\ Debugger-agent-storage.jar "Mxb.getlibrarypath ()= "C:\Program files\java\jdk1.8.0_161\bin; C:\windows\Sun\Java\bin; C:\windows\system32; C:\windows; C:\Program Files\docker\docker\resources\bin; C:\Program Files\nvidia GPU Computing toolkit\cuda\v8.0\bin; C:\Program Files\nvidia GPU Computing TOOLKIT\CUDA\V8.0\LIBNVVP; C:\Program files\nvidia GPU Computing toolkit\cuda\v8.0\lib\x64;d:\applicaton\devtools\python\3.5\scripts\;D: \ Applicaton\devtools\python\3.5\;D: \applicaton\devtools\cudnn-8.0-windows10-x64-v5.1\cuda;d:\applicaton\ Devtools\cudnn-8.0-windows10-x64-v5.1\cuda\bin;d:\applicaton\devtools\cudnn-8.0-windows10-x64-v5.1\cuda\lib\ X64;d:\applicaton\devtools\cudnn-8.0-windows10-x64-v5.1\cuda\lib; C:\Program Files (x86) \common Files\netsarang; C:\WINDOWS\system32; C:\WINDOWS; C:\WINDOWS\System32\Wbem; C:\WINDOWS\System32\WindowsPowerShell\v1.0\; C:\Program Files\Microsoft SQL Server\120\tools\binn\; C:\Program Files\Microsoft SQL Server\130\tools\binn\; C:\Program Files\microsoft\web Platform installer\; C:\Program Files (x86) \microsoft Sdks\azure\cl " mxb.getclasspath ()  = "D:\applicaton\devtools\jetbrains\intellijidea\lib\idea_rt.jar;d:\applicaton\devtools\jetbrains\intellijidea\ Plugins\junit\lib\junit-rt.jar;d:\applicaton\devtools\jetbrains\intellijidea\plugins\junit\lib\junit5-rt.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\charsets.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\deploy.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\access-bridge-64.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\cldrdata.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\dnsns.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\jaccess.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\jfxrt.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\localedata.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\nashorn.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\sunec.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\sunjce_provider.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\sunmscapi.jar; C:\Program Files\java\jdk1.8.0_161\jre\lib\ext\sunpkcs11.jar; C:\PR " mxb.getmanagementspecversion ()= "1.2"Mxb.getspecname ()= "Java Virtual machine Specification"Mxb.getspecvendor ()= "Oracle Corporation"mxb.getstarttime ()= 1527587462275mxb.getuptime ()= 95372Mxb.getvmvendor ()= "Oracle Corporation"Mxb.getobjectname ()= {[email protected]} "Java.lang:type=runtime"Mxb.getname ()= "[Email protected]"

3. Get operating System Information

    @Test    publicvoid  test2 () {        =  Managementfactory.getoperatingsystemmxbean ();        System.out.println (Osb.getname ()); Windows        System.out.println (Osb.getarch ());//amd        System.out.println (Osb.getavailableprocessors () ); 4        System.out.println (Osb.getversion ());//10.0        System.out.println (Osb.getsystemloadaverage ());//- 1.0    }

Getting JVM information in Java code