jni jnienv GetVersion example c c++ java

GetVersion

jint GetVersion(JNIEnv *env);

Returns the version of the native method interface.

LINKAGE:

Index 4 in the JNIEnv interface function table.

PARAMETERS:

env: the JNI interface pointer.

RETURNS:

Returns the major version number in the higher 16 bits and the minor version number in the lower 16 bits.

In JDK/JRE 1.1, GetVersion() returns 0x00010001.

In JDK/JRE 1.2, GetVersion() returns 0x00010002.

In JDK/JRE 1.4, GetVersion() returns 0x00010004.

In JDK/JRE 1.6, GetVersion() returns 0x00010006.

Constants

SINCE JDK/JRE 1.2:

#define JNI_VERSION_1_1 0x00010001
#define JNI_VERSION_1_2 0x00010002

/* Error codes */
#define JNI_EDETACHED    (-2)              /* thread detached from the VM */
#define JNI_EVERSION     (-3)              /* JNI version error 

SINCE JDK/JRE 1.4:

    #define JNI_VERSION_1_4 0x00010004

SINCE JDK/JRE 1.6:

    #define JNI_VERSION_1_6 0x00010006