jnidemo1.c

精通Java核心技术源代码

#include "JNIDemo1.h"
#include <string.h>
	
JNIEXPORT jint JNICALL Java_JNIDemo1_intMethod (JNIEnv *env, jobject obj, jint num) 
{
	return num * num;
}
		 
JNIEXPORT jboolean JNICALL Java_JNIDemo1_booleanMethod
(JNIEnv *env, jobject obj, jboolean boolean) 
{
	return !boolean;
}
	
JNIEXPORT jstring JNICALL Java_JNIDemo1_stringMethod
(JNIEnv *env, jobject obj, jstring string) 
{
	const char *str = (*env)->GetStringUTFChars(env, string, 0);
	char cap[128];
	strcpy(cap, str);
	(*env)->ReleaseStringUTFChars(env, string, str);
	return (*env)->NewStringUTF(env, strupr(cap));
}
		
void main(){}