日期:2011-01-26 02:54:00 来源:本站整理
JDK工具 java号令详解[Java编程]
本文“JDK工具 java号令详解[Java编程]”是由七道奇为您精心收集,来源于网络转载,文章版权归文章作者所有,本站不对其观点以及内容做任何评价,请读者自行判断,以下是其具体内容:
java号令也是SCJP必考内容,很有效处,即便你目前用的是IDE.
1、查看用法
C:\>java -help
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-client to select the "client" VM
-server to select the "server" VM
-hotspot is a synonym for the "client" VM [deprecated]
The default VM is client.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument |
这个号令帮忙是英文的,不知道JDK咋搞的,也无阻碍利用.
别的,这个号令的非尺度选项也是很重要的,常常在JVM优化配置方面很关键,可以参看本人的JVM参数配置文章.
C:\myproject>java -X -Xmixed mixed mode execution (default) -Xint interpreted mode execution only -Xbootclasspath:<directories and zip/jar files separated by ;> set search path for bootstrap classes and resources -Xbootclasspath/a:<directories and zip/jar files separated by ;> append to end of bootstrap class path -Xbootclasspath/p:<directories and zip/jar files separated by ;> prepend in front of bootstrap class path -Xnoclassgc disable class garbage collection -Xincgc enable incremental garbage collection -Xloggc:<file> log GC status to a file with time stamps -Xbatch disable background compilation -Xms<size> set initial Java heap size -Xmx<size> set maximum Java heap size -Xss<size> set java thread stack size -Xprof output cpu profiling data -Xfuture enable strictest checks, anticipating future default -Xrs reduce use of OS signals by Java/VM (see documentation) -Xcheck:jni perform additional checks for JNI functions -Xshare:off do not attempt to use shared class data -Xshare:auto use shared class data if possible (default) -Xshare:on require using shared class data, otherwise fail. |
以上是“JDK工具 java号令详解[Java编程]”的内容,如果你对以上该文章内容感兴趣,你可以看看七道奇为您推荐以下文章:
本文地址: | 与您的QQ/BBS好友分享! |
评论内容只代表网友观点,与本站立场无关!
评论摘要(共 0 条,得分 0 分,平均 0 分)
查看完整评论