java调用linux下的so库

public class Abc {
    static {
        System.loadLibrary("abc");
    }

    public native static String getAbc();

    public static void main(String s[]) {
        System.out.println(getAbc());
    }
}

/* DO NOT EDIT THIS FILE - it is machine generated */
#include </usr/local/jdk1.8.0_201/include/jni.h>
/* Header for class Abc */

#ifndef _Included_Abc
#define _Included_Abc
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     Abc
 * Method:    getAbc
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_Abc_getAbc
  (JNIEnv *, jclass);

#ifdef __cplusplus
}
#endif
#endif

#include <stdio.h>
#include "Abc.h"

JNIEXPORT jstring JNICALL Java_Abc_getAbc(JNIEnv *env, jclass t2)
{
    char *ptr = "hello world";
    
    jstring str ;
    str = (*env)->NewStringUTF(env, ptr);
    
    return str;
}

[root@sec javatest]# javac Abc.java

[root@sec javatest]# java Abc

hello world