I have a installer with a JRE embebed, that is, it have a jvm.dll instead a java.exe. What i would like to do is to execute a Java app (a jar file) using jvm.dll instead of java.exe.
Is it that possible?
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1Without further information on what you have, check this https://docs.oracle.com/en/java/javase/11/docs/specs/jni/invocation.html – Federico klez Culloca Apr 30 '19 at 08:46
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My Java program is a Websocket server program deployed as a jar file. I can run this program like this java -jar myserver.jar, that is, using java.exe. The problem is that myserver.jar is installed with a installer in windows (.exe) and this installer also install a embebed JRE. This embebed JRE does not have java.exe. Instead it has dlls like jvm.dll. java.exe is a wrapper of jvm.dll. What I woul like is to execute myserver.jar using this jvm.dll distribute with my installer instead of using the JRE installed in the diferents computers. – Víctor Apr 30 '19 at 09:01
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What installer is that? Is it a custom one or something like javapackager? – Federico klez Culloca Apr 30 '19 at 09:32
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It is a custom one, using Inno Setup : http://www.jrsoftware.org/ – Víctor Apr 30 '19 at 09:38
2 Answers
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It is possible.
You have to write C/C++ program to achieve it (or in other language able to do native calls).
talex
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I think that's not possible, unless you don't embed your java application in a C++ application.
Further reading:
tarabor
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Yes but only if you embed your application into a C++ program. You cannot execute a java program using jvm.dll only – tarabor Apr 30 '19 at 09:08