CODEWITHSUNDEEP
javajvmwindows-runtime
Flot2011
Flot2011

Reputation: 4671

Would Java Virtual Machine run on WinRT?

It seems to be a simple question, but I wasn't able to find a meaningful answer, only a lot of speculations.

Also, if an answer is yes, which JVM would it be, Oracle's or again something patched by Microsoft?

Specifically: I have a Java desktop application, running on JRE 7, would it run on WinRT? I mean, can I install JRE 7 on WinRT? Would it run without problems?

Upvotes: 2

Views: 1137

Answers (1)

James McNellis
James McNellis

Reputation: 355069

Yes and no.

It would certainly be possible to implement a Java Virtual Machine, or at least a substantial portion of one, using the Windows Runtime APIs and the portions of the Windows API that are usable from a Windows Store app. However, such a JVM would need to be an interpreting JVM, not a JIT compiling JVM. JIT compilation requires the ability to change memory protection (to allow execution of generated code), but the APIs to change memory protection (VirtualProtect and friends) are not callable from user code in a Windows Store app.

So, could you implement an interpreting JVM usable in a Windows Store app? Probably. Whether or not it would be possible to implement a JVM that performs well enough to be usable is another matter altogether, though.

Upvotes: 3

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