jni jnienv FromReflectedMethod example c c++ java

FromReflectedMethod

jmethodID FromReflectedMethod(JNIEnv *env, jobject method);

Converts a java.lang.reflect.Method or java.lang.reflect.Constructor object to a method ID.

LINKAGE:

Index 7 in the JNIEnv interface function table.

Example of FromReflectedMethod

#include <jni.h>
/*
 * Method: org.apache.harmony.vts.test.vm.jni.reflection.FromReflectedMethodTest.nativeExecute(Ljava/lang/reflect/Method;)Z
 */
JNIEXPORT jboolean JNICALL
Java_org_apache_harmony_vts_test_vm_jni_reflection_FromReflectedMethodTest_nativeExecute
    (JNIEnv *env, jobject this_object, jobject mRefl)
{
 jmethodID mID1, mID2;
 jclass strClass;

 mID1 = (*env)->FromReflectedMethod(env, mRefl);
 if(!mID1) return JNI_FALSE;

 strClass = (*env)->FindClass(env, "java/lang/String");
 mID2 = (*env)->GetMethodID(env, strClass, "length", "()I");
 if(!mID2) return JNI_FALSE;

 if(mID1 != mID2) return JNI_FALSE;
 return JNI_TRUE;
}

/*
 * Method: org.apache.harmony.vts.test.vm.jni.reflection.FromReflectedMethodTest.nativeExecute1(Ljava/lang/reflect/Constructor;)Z
 */
JNIEXPORT jboolean JNICALL
Java_org_apache_harmony_vts_test_vm_jni_reflection_FromReflectedMethodTest_nativeExecute1
    (JNIEnv *env, jobject this_object, jobject cRefl)
{
 jmethodID mID1, mID2;
 jclass strClass;

 mID1 = (*env)->FromReflectedMethod(env, cRefl);
 if(!mID1) return JNI_FALSE;

 strClass = (*env)->FindClass(env, "java/lang/String");
 mID2 = (*env)->GetMethodID(env, strClass, "<init>", "(Ljava/lang/String;)V");
 if(!mID2) return JNI_FALSE;

 if(mID1 != mID2) return JNI_FALSE;
 return JNI_TRUE;
}