C ++可以调用Java代码吗？

是的，您当然可以。这是一个例子：

这是java文件：

public class InvocationHelloWorld {    public static void main(String[] args) {        System.out.println("Hello, World!");        System.out.println("Arguments sent to this program:");        if (args.length == 0) { System.out.println("(None)");        } else { for (int i=0; i<args.length; i++) {     System.out.print(args[i] + " "); } System.out.println();        }    }}

还有一些使用它的C ++：

void invoke_class(JNIEnv* env) {  jclass helloWorldClass;  jmethodID mainMethod;  jobjectArray applicationArgs;  jstring applicationArg0;  helloWorldClass = (env)->FindClass("InvocationHelloWorld");  if(! helloWorldClass )  {    std::cerr<<"Couldn't get "InvocationHelloWorld""<<std::endl;    return;  }  mainMethod = (env)->GetStaticMethodID(helloWorldClass, "main", "([Ljava/lang/String;)V");  if(! mainMethod )  {    std::cerr<<"Coulnd't get "InvocationHelloWorld::main""<<std::endl;    return;  }  applicationArgs = (env)->NewObjectArray(1, (env)->FindClass("java/lang/String"), NULL);  applicationArg0 = (env)->NewStringUTF("From-C-program");  (env)->SetObjectArrayElement(applicationArgs, 0, applicationArg0);  (env)->CallStaticVoidMethod(helloWorldClass, mainMethod, applicationArgs);}