Failed to read candidate component class

I was having following error,

Failed to read candidate component class: file [/a/b/c/z$1.class]; nested exception is java.lang.SecurityException: Prohibited package name: java.lang: Prohibited package name: java.lang applicationContext-jpa.xml /im4/src/main/resources/META-INF/spring line 5 Spring Beans Problem

When clicked on it, it opens applicationContext-jpa.xml, with line <repositories base-package="a.b.c" />

Looking into the code of z.java, it is found out that it is util class having package a.b.c, which spring scans for beans.

Changing the package to a.b.z resolves the issue.

JNI NDK for android developers (and casual c programmer)

1. Download NDK
2. extract NDK on c drive (no space in path)
3. create jni folder in eclipse android project, put c file(s), make file and libraries (.a/.o) in this folder
4. c file should be as follows (lowlevelfunctions.c), note signature of function:

#include <string.h>
#include <jni.h>
#include "thirdpartylib.h"


jstring Java_com_example_LowLevelFunctions_getInfo(JNIEnv* env, jobject javaThis) {

return (*env)->NewStringUTF(env, "hello world");
}

/************************************
*** and make file as follows (Android.mk): ***
************************************/


LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_MODULE    := lowlevelfunctions
LOCAL_MODULE_TAGS := lowlevelfunctions
LOCAL_SRC_FILES := lowlevelfunctions.c
LOCAL_ARM_MODE := arm

LOCAL_LDFLAGS = $(LOCAL_PATH)/thirdpartylib.a
#LOCAL_STATIC_LIBRARIES := thirdpartylib

include $(BUILD_SHARED_LIBRARY)

5.  on cmd, navigate to jni folder
6. on the jni folder, execute ndk-build executable directly from NDK root path
7. liblowlevelfunctions.so will be created to the parent folder's lib folder
8. to include it in the java, note the function name in c file, it should be added in the class LowLevelFunctions of com.example package, named getInfo, as follows:

package com.example;

class LowLevelFunctions {

static {
System.loadLibrary("lowlevelfunctions"); // as defined in make file LOCAL_MODULE
}

public static native String getInfo();

}

9. If you want to create executable, include int main() function in c file and include $(BUILD_EXECUTABLE) in last line of make file.