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JavaVMMBS class

Type Topic Plugin Version macOS Windows Linux iOS Targets
class Java MBS Java Plugin 4.3 ✅ Yes ✅ Yes ✅ Yes ❌ No Desktop, Console & Web
Function: The class for a java virtual machine.
dim vm as JavaVMMBS // global

const JNI_VERSION_1_1 = &h00010001
const JNI_VERSION_1_2 = &h00010002
const JNI_VERSION_1_4 = &h00010004

if TargetLinux then
// change path for your linux PC!
end if

dim options(-1) as string
dim f as FolderItem=GetFolderItem("test.jar")

vm=new JavaVMMBS(JNI_VERSION_1_4, options, f, false)

if vm.Handle = 0 then
MsgBox "Can't create Java VM"
MsgBox "Java Initialized."
end if
Add Linux support plugin version 8.7.

Releasing the java vm (by releasing all java objects), and reinitializing can fail.

Please make sure this Java VM object stays alive until you are done with all your java stuff. So all the java objects go away and this vm object is destroyed on the end. Because if some java code is still running like an background java thread, quitting the VM can lead into crashes.

While the plugin supports to have several instances, it seems like JNI does not support that.

On Windows, we look into Local Machine\SOFTWARE\JavaSoft\Java Runtime Environment in registry to find the newest entry and the path to the jvm.dll file. Please note that on Windows you can install 32-bit and 64-bit version of Java and you need the matching bit number to FileMaker application.

If you get error 126 on Windows, maybe MSVCR100.DLL is missing. So install Visual Studio 2010 runtime libraries. You can download them from Microsoft website. Do not download them from other websites spreading malware!

This class has no sub classes.

Some methods using this class:

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Some examples using this class:

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The items on this page are in the following plugins: MBS Java Plugin.

JavaThrowableMBS   -   JPEG2000MBS

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