JAVASCRIPT

get json data into array of object

$.getJSON('contacts.json', function (json) {
var array = [];
for (var key in json) {
    if (json.hasOwnProperty(key)) {
        var item = json[key];
        array.push({
            name: item.Name,
            surname: item.Surname,
            mobile: item.mobile,
            email: item.email
        });            
    }
}
});

json array get json object

int n = 0;
JSONObject jsonObject = jsonArray.getJSONObject(n);

Get Value of JSON As Array

var j = {a:"aaaaaa", b:"bbbbbb", c:"cccccc"}
console.log(Object.keys(j))