- const char *name = env->GetStringUTFChars((jstring) jname, 0);
- const char *value_java = env->GetStringUTFChars((jstring) jvalue, 0);
- char *value = xbt_strdup(value_java);
+ const char* name = env->GetStringUTFChars((jstring)jname, nullptr);
+ const char* value_java = env->GetStringUTFChars((jstring)jvalue, nullptr);