how to parse json using GSON in android?

can any body parse this json for me using GSON i tried many time but, failed.

{
    "posting_detail": {
        "posting_id": "14",
        "posting_title": "LuLu Last Offer",
        "posting_desc": "dqwewqewe",
        "mobile_number": "2344234234",
        "phone_number": "34234324",
        "address": "fefdsfds",
        "city_name": "Abu Dhabi",
        "created_on": "2015-06-22 14:55:05",
        "normal_price": null,
        "images": [
            {
                "photo_img": "http://xyz/images/posting/IMG_1212121219.jpg"
            },
            {
                "photo_img": "http://xyz/images/posting/IMG_1212121220.jpg"
            }
        ]
    }
}

Thanks in advance