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I'm currently trying to tune my Eclipse installation and bumped into the "-vm" option. Other posts on SO mentioned that it's good to always use the latest JVM available because they keep getting better in terms of performance, so I'm likely to do that. I was wondering though how you could find out what JVM Eclipse runs on if you are not specifying the "-vm" parameter.
I found the following in the docs but that doesn't clarify how it will look for a JVM:
when passed to the Eclipse executable, this option is used to locate the Java VM to use to run Eclipse. It must be the full file system path to an appropriate Java executable. If not specified, the Eclipse executable uses a search algorithm to locate a suitable VM. In any event, the executable then passes the path to the actual VM used to Java Main using the -vm argument. Java Main then stores this value in eclipse.vm.
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Type "java -version" into the Command Prompt, then press Enter on your keyboard. After a moment, your screen should display the information your computer has about Java, including what version you have installed.
Current releases of Eclipse require Java 11 JRE/JDK or newer. A Java Development Kit (JDK) includes many useful extras for Java developers including the source code for the standard Java libraries. Regardless of your operating system, you will need to install some Java virtual machine (JVM).
-- Go to the Eclipse Window > preferences, in "Java > Installed JREs". -- Copy the current default JRE with a new name, for example myJRE. -- Select the new JRE and click on the "Edit" button. -- In the "Edit JRE" dialog, add your JVM arguments in the "Default VM Arguments" field.
Actually, Windows->Preferences->Java->installed doesn't show you the one Eclipse runs under, but only the default JRE that it runs things under.
To see the one Eclipse is runing under, go to Help->About Eclipse Platform->Configuration Details, and look for the property eclipse.vm.
For example:
eclipse.vm=C:\Program Files\Java\jre6\bin\client\jvm.dll If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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