What is -server and -client option?

[Gurumurthy Ramamurthy]

Hello,

I heard you can run a java program using -server and -client option. What are these and what are the uses?

Thanks,
Guru

[Vijayendra V Rao]

The following are the command line options that you can use with the java command:

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-hotspot

-cp -classpath <directories and zip/jar files separated by ;>

-D<name>=<value>

-verbose[:class|gc|jni]

-version

-showversion

-? -help

-X
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I don't think that there are options -server and -client.

[Vijayendra V Rao]

The ones that I have posted above are the Standard options. Even if you look at the non-standard options, the ones I have included below, you still don't have the -server and -client options.

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-Xmixed

-Xint

-Xbootclasspath:<directories and zip/jar files separated by ;>

-Xbootclasspath/a:<directories and zip/jar files separated by ;>

-Xbootclasspath/p:<directories and zip/jar files separated by ;>

-Xnoclassgc

-Xincgc

-Xbatch

-Xms<size>

-Xmx<size>

-Xss<size>

-Xprof

-Xrunhprof[:help]|[:<option>=<value>, ...]

-Xdebug

-Xfuture

-Xrs
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[Darin Niard]

What JRE do you have installed, Vijay?

Z:\>java -?
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
    ...

[Vijayendra V Rao]

Originally posted by Darin Niard:
What JRE do you have installed, Vijay?

My JDK must be older than yours...thats why I did not get those options

[Dirk Schreckmann]

The Java application launcher tool is documented at
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/java.html

Concerning the use/meaning of -server and -client switches...

If I recall correctly, using the -server switch typically causes the JVM to start more slowly, and then run in a more efficient manner once started. The -client switch typically causes the JVM to start more quickly, skipping some of the optimizations used by the -server switch.