How do I set the eclipse.ini -vm option?

My solution is:

-vm
D:/work/Java/jdk1.6.0_13/bin/javaw.exe
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256M
-framework
plugins\org.eclipse.osgi_3.4.3.R34x_v20081215-1030.jar
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m

eclipse.ini file must have -vm on the first line and a path on the second line. Don't try to put everything into one line!

-vm
C:\Program Files\Java\jdk1.6.0_07\bin\javaw.exe

There is a wiki page here.

There are two ways the JVM can be started: by forking it in a separate process from the Eclipse launcher, or by loading it in-process using the JNI invocation API.

If you specify -vm with a path to the actual java(w).exe, then the JVM will be forked in a separate process. You can also specify -vm with a path to the jvm.dll so that the JVM is loaded in the same process:

-vm
D:/work/Java/jdk1.6.0_13/jre/bin/client/jvm.dll

You can also specify the path to the jre/bin folder itself.

Note also, the general format of the eclipse.ini is each argument on a separate line. It won't work if you put the "-vm" and the path on the same line.

-vm

C:\Program Files\Java\jdk1.5.0_06\bin\javaw.exe

Remember, no quotes, no matter if your path has spaces (as opposed to command line execution).

See here: Find the JRE for Eclipse

You have to edit the eclipse.ini file to have an entry similar to this:

C:\Java\JDK\1.5\bin\javaw.exe (your location of java executable)
-vmargs
-Xms64m   (based on you memory requirements)
-Xmx1028m

Also remember that in eclipse.ini, anything meant for Eclipse should be before the -vmargs line and anything for JVM should be after the -vmargs line.

I know that there exists a command line option, -vm, to specify the path to the executable of the Java runtime. This may be the same as in eclipse.ini.