maven dependency version range http://maven.apache.org/components/enforcer/enforcer-rules/versionRanges.html
Version Range Specification The [RequireMavenVersion][1] and [RequireJavaVersion][2] rules use the [standard Maven version range syntax][3]{.externalLink} with one minor change for ease of use (denoted with *):
Range Meaning 1.0 x >= 1.0 * The default Maven meaning for 1.0 is everything (,) but with 1.0 recommended. Obviously this doesn't work for enforcing versions here, so it has been redefined as a minimum version. (,1.0] x <= 1.
NMT, Native Memory Tracking NMT for Hotspot VM is turned off by default. Turn this feature on using JVM command line option -XX:NativeMemoryTracking=[off | summary | detail] 注意,根据Java官方文档,开启NMT会有5%-10%的性能损耗; 访问NMT数据 JDK
jcmd New Features in JDK7 update 4 JRockit command line utility JRCMD (JRockit Command). JRCMD was a command line tool to enumerate the Java processes running on the local machine, and to send commands (referred to as “Diagnostic Commands”) to them. JRCMD has been renamed JCMD (Java Command). jcmd用于向正在运行的JVM发送诊断信息请