The Invocation API allows software vendors to load the Java VM into an arbitrary native application.
Questions tagged [invocation-api]
9 questions
4
votes
2 answers
C-to-Java calls pass but JVM crashes in a weird/unexplained way
first question asked, so I'll get straight to it.
I've got some C code that will be interfacing with Java; i did my homework on JNI and the topic. Here's the code:
C-part:
#include
#include
#include
#define CLASSPATH…
Shark
- 6,513
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2
votes
1 answer
jstring to char* in c usage not converting into printable format
I am running a simple JNI program using the Invocation API on z/os with C. The Java program has a simple sayHello() method like this-
public static String sayHello(){
return "Hello World!!!";
}
the code that calls this method and prints the…
User2709
- 573
- 5
- 17
2
votes
3 answers
Access static enum fields using JNI invocation API
How can we access static enum fields using JNI invocation API
I am trying to access glassfish org.glassfish.api.embedded.ContainerBuilder.Type enumeration from Glassfish api using following code
jclass Type= env->FindClass(
…
Xinus
- 29,617
- 32
- 119
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1
vote
1 answer
The JVM crashes while printing the stacktrace
I want to convert an exception stacktrace to a string in C.
I have this code:
(main.c)
#include
#include
#include
#include
int main() {
JavaVM *jvm;
JNIEnv *env;
JavaVMInitArgs vm_args;
JavaVMOption…
JCWasmx86
- 3,473
- 2
- 11
- 29
1
vote
0 answers
Is there a way to efficiently copy wrapped JNI objects in C++?
I'm using the JNI Invocation API in an attempt to wrap a Java library in C++.
My C++ classes are essentially containers for JNI jobjects with setter/getter methods to call JNI and retrieve data from said jobjects. What I am trying to figure out is…
Ddor
- 347
- 1
- 12
1
vote
1 answer
JNI invocation api: get method id for method with multiple parameters
I want to call java function from c++ which takes multiple parameters , I have tried following statement
mid=env->GetMethodID(JDeployerClass,"deploy","(Ljava/io/File;,Lorg/glassfish/api/deployment/DeployCommandParameters;)Ljava/lang/String;");
But…
Xinus
- 29,617
- 32
- 119
- 165
1
vote
2 answers
Creating java executable using JNI?
I am trying to create executable under windows platform for Java program using JNI ,C/C++ and invocation API, I have already created jar file for my program which includes all dependencies. I want to embed it in exe file, I was successful in…
Xinus
- 29,617
- 32
- 119
- 165
1
vote
1 answer
Compile with VC++
I need to convert this gcc build command to VC++
g++ -o launcher.exe launcher.cpp -I C:/JDK/include_jdk -I C:/JDK/include_jdk/win32 -L C:/Program Files (x86)/Java/jre6/bin/client -ljvm
I don't use VC++ at all (use mingw) and just have to compile…
Alf
- 1,285
- 3
- 14
- 24
0
votes
0 answers
Creating JVM within C++ class method loop - invocation API
I have wrapped a Java library into a C++ class library and wish to use this library within another C++ project.
Specifically, I would like to use the library within a class method which reads in an input file, loops over all elements in the file,…
Ddor
- 347
- 1
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