使用外部方法的Java打印数组

public class ExternalMethodExample {
    public static native void printArray(int[] array);

    static {
        System.loadLibrary("ExternalMethodExample");
    }

    public static void main(String[] args) {
        int[] array = {1, 2, 3, 4, 5};
        printArray(array);
    }
}

#include <jni.h>
#include <stdio.h>
#include "ExternalMethodExample.h"

JNIEXPORT void JNICALL Java_ExternalMethodExample_printArray(JNIEnv *env, jclass cls, jintArray array) {
    jsize length = (*env)->GetArrayLength(env, array);
    jint *elements = (*env)->GetIntArrayElements(env, array, NULL);

    printf("Array: ");
    for (int i = 0; i < length; i++) {
        printf("%d ", elements[i]);
    }
    printf("\n");

    (*env)->ReleaseIntArrayElements(env, array, elements, 0);
}

gcc -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/win32" -shared -o libExternalMethodExample.so ExternalMethodExample.c