貼個java的運行參數：


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


-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.