jcmd(1) jcmd(1) jcmd - Java Virtual Machine (JVM) jcmd [-l|-h|-help] jcmd pid|main-class PerfCounter.print jcmd pid|main-class -f filename jcmd pid|main-class command[ arguments] jcmdJVMJVMJVM : com.sun.management.DiagnosticCommandMBeanDiagnosticCommandMBeanhttp://docs.oracle.com/javase/8/docs/jre/api/management/extension/com/sun/management/DiagnosticCommandMBean.htmlAPI jcmd- lJava-h-helpjcmd (pid)(main-class)jcmdJavaJava0Java Perfcounter.print JavaJava -f filename Java-f1(#)stop command [arguments] Javahelphelp : ('")(\)() -f filename 1(#)stop -h -help -l Java o jps(1) JDK 8 20131121 jcmd(1)