How Can I Call Java Functions from C++ Directly Without Using CMD?
Published on 2024-11-09
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Invoking Java Functions from C Applications
Calling Java functions from C applications presents a challenge, especially when seeking a direct solution that circumvents the use of CMD-based techniques.
To establish communication between these two languages, consider the approach detailed in "Creating a JVM from C." It outlines a process for creating a JVM and subsequently invoking Java methods.
In scenarios where a JVM already exists (e.g., when a Java program invokes your C program), you can cache the JNIEnv* pointer. However, it's crucial to proceed with caution when caching pointers to the JVM from C/C , as there are specific semantics governing what can be cached and when it can be invoked.
For further guidance, consult the JNI reference, as advised by Brian Agnew. It provides comprehensive information on these caching practices.
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