JNI Native Interface and JavaFX - NoClassDefFoundError
I have a bash script that launches my program using an embedded JRE. This script works:
#!/bin/bash
exec ./jre/bin/java
--module-path ./jre/jfx
--add-modules=javafx.controls,javafx.swing
--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED
-jar hypnos.jar "$@" --base-dir="$ROOT"
I am trying to write a C++ program that uses the JNI Native Interface to replace that bash script. As you can see, they provide identical arguments to the JVM:
#include <jni.h>
int main() {
JavaVM *jvm;
JNIEnv *env;
JavaVMInitArgs vm_args;
JavaVMOption* options = new JavaVMOption[4];
options[0].optionString = (char *)"-Djava.class.path=jre/lib/server/:./hypnos.jar";
options[1].optionString = (char *)"--module-path ./jre/jfx";
options[2].optionString = (char *)"--add-modules=javafx.controls,javafx.swing";
options[3].optionString = (char *)"--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED";
vm_args.version = JNI_VERSION_10;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = false;
JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
delete options;
jmethodID main = NULL;
jclass cls = NULL;
cls = env->FindClass("net/joshuad/hypnos/Hypnos");
if(env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
if (cls != NULL) {
main = env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
} else {
printf("Unable to find the requested classn");
}
if (main != NULL) {
env->CallStaticVoidMethod( cls, main, " ");
} else {
printf("main method not found") ;
}
jvm->DestroyJavaVM();
return 0;
}
However, the bash script works while the C++ program gives me:
Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application with a stack trace.
I can't understand this, because it seems that the C++ program is doing the same thing that the bash script is doing.
I have an almost-identical version of this C++ program that launches a "hello world" java program that doesn't depend on javafx, and it works. So the issue seems to be the JVM created by C++ can't find JavaFX. However, I'm pointing it all the same places that the working bash script is being pointed at, so I'm not sure why it can't find JavaFX.
Any idea how to address this?
java jni jnienv
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
add a comment |
I have a bash script that launches my program using an embedded JRE. This script works:
#!/bin/bash
exec ./jre/bin/java
--module-path ./jre/jfx
--add-modules=javafx.controls,javafx.swing
--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED
-jar hypnos.jar "$@" --base-dir="$ROOT"
I am trying to write a C++ program that uses the JNI Native Interface to replace that bash script. As you can see, they provide identical arguments to the JVM:
#include <jni.h>
int main() {
JavaVM *jvm;
JNIEnv *env;
JavaVMInitArgs vm_args;
JavaVMOption* options = new JavaVMOption[4];
options[0].optionString = (char *)"-Djava.class.path=jre/lib/server/:./hypnos.jar";
options[1].optionString = (char *)"--module-path ./jre/jfx";
options[2].optionString = (char *)"--add-modules=javafx.controls,javafx.swing";
options[3].optionString = (char *)"--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED";
vm_args.version = JNI_VERSION_10;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = false;
JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
delete options;
jmethodID main = NULL;
jclass cls = NULL;
cls = env->FindClass("net/joshuad/hypnos/Hypnos");
if(env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
if (cls != NULL) {
main = env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
} else {
printf("Unable to find the requested classn");
}
if (main != NULL) {
env->CallStaticVoidMethod( cls, main, " ");
} else {
printf("main method not found") ;
}
jvm->DestroyJavaVM();
return 0;
}
However, the bash script works while the C++ program gives me:
Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application with a stack trace.
I can't understand this, because it seems that the C++ program is doing the same thing that the bash script is doing.
I have an almost-identical version of this C++ program that launches a "hello world" java program that doesn't depend on javafx, and it works. So the issue seems to be the JVM created by C++ can't find JavaFX. However, I'm pointing it all the same places that the working bash script is being pointed at, so I'm not sure why it can't find JavaFX.
Any idea how to address this?
java jni jnienv
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
add a comment |
I have a bash script that launches my program using an embedded JRE. This script works:
#!/bin/bash
exec ./jre/bin/java
--module-path ./jre/jfx
--add-modules=javafx.controls,javafx.swing
--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED
-jar hypnos.jar "$@" --base-dir="$ROOT"
I am trying to write a C++ program that uses the JNI Native Interface to replace that bash script. As you can see, they provide identical arguments to the JVM:
#include <jni.h>
int main() {
JavaVM *jvm;
JNIEnv *env;
JavaVMInitArgs vm_args;
JavaVMOption* options = new JavaVMOption[4];
options[0].optionString = (char *)"-Djava.class.path=jre/lib/server/:./hypnos.jar";
options[1].optionString = (char *)"--module-path ./jre/jfx";
options[2].optionString = (char *)"--add-modules=javafx.controls,javafx.swing";
options[3].optionString = (char *)"--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED";
vm_args.version = JNI_VERSION_10;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = false;
JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
delete options;
jmethodID main = NULL;
jclass cls = NULL;
cls = env->FindClass("net/joshuad/hypnos/Hypnos");
if(env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
if (cls != NULL) {
main = env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
} else {
printf("Unable to find the requested classn");
}
if (main != NULL) {
env->CallStaticVoidMethod( cls, main, " ");
} else {
printf("main method not found") ;
}
jvm->DestroyJavaVM();
return 0;
}
However, the bash script works while the C++ program gives me:
Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application with a stack trace.
I can't understand this, because it seems that the C++ program is doing the same thing that the bash script is doing.
I have an almost-identical version of this C++ program that launches a "hello world" java program that doesn't depend on javafx, and it works. So the issue seems to be the JVM created by C++ can't find JavaFX. However, I'm pointing it all the same places that the working bash script is being pointed at, so I'm not sure why it can't find JavaFX.
Any idea how to address this?
java jni jnienv
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
I have a bash script that launches my program using an embedded JRE. This script works:
#!/bin/bash
exec ./jre/bin/java
--module-path ./jre/jfx
--add-modules=javafx.controls,javafx.swing
--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED
-jar hypnos.jar "$@" --base-dir="$ROOT"
I am trying to write a C++ program that uses the JNI Native Interface to replace that bash script. As you can see, they provide identical arguments to the JVM:
#include <jni.h>
int main() {
JavaVM *jvm;
JNIEnv *env;
JavaVMInitArgs vm_args;
JavaVMOption* options = new JavaVMOption[4];
options[0].optionString = (char *)"-Djava.class.path=jre/lib/server/:./hypnos.jar";
options[1].optionString = (char *)"--module-path ./jre/jfx";
options[2].optionString = (char *)"--add-modules=javafx.controls,javafx.swing";
options[3].optionString = (char *)"--add-opens javafx.controls/javafx.scene.control=ALL-UNNAMED";
vm_args.version = JNI_VERSION_10;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = false;
JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
delete options;
jmethodID main = NULL;
jclass cls = NULL;
cls = env->FindClass("net/joshuad/hypnos/Hypnos");
if(env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
if (cls != NULL) {
main = env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
} else {
printf("Unable to find the requested classn");
}
if (main != NULL) {
env->CallStaticVoidMethod( cls, main, " ");
} else {
printf("main method not found") ;
}
jvm->DestroyJavaVM();
return 0;
}
However, the bash script works while the C++ program gives me:
Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application with a stack trace.
I can't understand this, because it seems that the C++ program is doing the same thing that the bash script is doing.
I have an almost-identical version of this C++ program that launches a "hello world" java program that doesn't depend on javafx, and it works. So the issue seems to be the JVM created by C++ can't find JavaFX. However, I'm pointing it all the same places that the working bash script is being pointed at, so I'm not sure why it can't find JavaFX.
Any idea how to address this?
java jni jnienv
java jni jnienv
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
edited Nov 24 '18 at 11:15
JoshuaD
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
asked Nov 24 '18 at 11:10
JoshuaDJoshuaD
1,20531835
1,20531835
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
This
vm_args.nOptions = 1;
needs to be
vm_args.nOptions = 4;
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
1
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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active
oldest
votes
active
oldest
votes
This
vm_args.nOptions = 1;
needs to be
vm_args.nOptions = 4;
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
1
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
add a comment |
This
vm_args.nOptions = 1;
needs to be
vm_args.nOptions = 4;
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
1
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
add a comment |
This
vm_args.nOptions = 1;
needs to be
vm_args.nOptions = 4;
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
This
vm_args.nOptions = 1;
needs to be
vm_args.nOptions = 4;
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
answered Nov 26 '18 at 15:08
WheezilWheezil
1,91211129
1,91211129
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
1
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
add a comment |
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
1
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
Thanks. I'll try that out tonight. Not used to working in C so I missed that.
– JoshuaD
Nov 26 '18 at 20:52
1
1
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
I work in Java a lot, coming back to C/C++ is always a bit jarring.
– Wheezil
Nov 28 '18 at 0:00
add a comment |
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