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Json comparison which contains arrays using Java

Json1:
{
"array1": [
{
"Name": "Xytrex Co.",
"Description": "Industrial Cleaning Supply Company",
"Account Number": "ABC15797531",
"Address": {
"Street": "st.road",
"pin": "789723"
}
},
{
"Name": "XYZ Company",
"Address": {
"Street": "Peters road",
"pin": "789700"
}
}
]
}
Json2:
{
"array2":[
{
"Name": "Xytrex Co.",
"Description": "Industrial Cleaning Supply Company",
"Account Number": "ABC15797531",
"Address": {
"Street": "st.road",
"pin": "789723"
}
},
{
"Name": "XYZ Company",
"Description": "Domestic Cleaning Supply Company",
"Address": {
"Street": "Peters road",
"pin": "789700"
}
}
]
}
Java Code used by me:
JsonParser Parser = new JsonParser();
Object obj1 = Parser.parse(new
FileReader("/home/cloudera/Desktop/SampleJson/src/JSON1.json"));
Object obj2 = Parser.parse(new
FileReader("/home/cloudera/Desktop/SampleJson/src/JSON2.json"));
JsonObject jsonObject1 = (JsonObject) obj1;
JsonObject jsonObject2 = (JsonObject) obj2;
Set<Map.Entry<String, JsonElement>> entries1 = jsonObject1.entrySet();
Set<Map.Entry<String, JsonElement>> entries2 = jsonObject2.entrySet();
for (Map.Entry<String, JsonElement> entry : entries1) {
//System.out.println("FirstJson:"+entry.getKey());
}
for (Map.Entry<String, JsonElement> entry : entries2) {
//System.out.println("SecondJson:"+entry.getKey());
}
if (jsonObject1.equals(jsonObject2)) {
System.out.println("Success");
} else {
entries1.removeAll(entries2);
//System.out.println("\n");
System.out.println("Result:" + entries1);
}
I have to compare two json files which contain arrays using Java, In array1 "Description" is missing I have to print that exact key and not the entire Json from first to last. In my output also "Description" is not there, but it's not printing exactly that key, its printing from first to last. Please help me with this.
The output I got:
Result:[array1=[{"Name":"Xytrex Co.","Description":"Industrial Cleaning Supply Company","Account Number":"ABC15797531","Address":{"Street":"st.road","pin":"789723"}},{"Name":"XYZ Company","Address":{"Street":"Peters road","pin":"789700"}}]]

This library is clean way to handle json comparison. It also has compare mode like strict check etc.
http://jsonassert.skyscreamer.org/javadoc/org/skyscreamer/jsonassert/JSONCompare.html
For your usecase you can check JSONCompareResult solves your problem.

I'd suggest you to use https://github.com/eBay/json-comparison library.
This library based on JsonAssert project but provide additional features
such as 'Exclude paths' , dealing with order and more

How do I convert a list represented as a string to a list?

I am building an Android application which reads from themoviedb.org.
What I am trying to do is have the user enter a movie title and use that title to find its id.
When I run the query to search for movies, I get a response like:
{
"page": 1,
"results": [
{
"poster_path": "aaaaa.jpg",
"id": "11",
"description": "MovieDescription"
},
{
"poster_path": "bbbbb.jpg",
"id": "12",
"description": "MovieDescription2"
},
{
"poster_path": "ccccc.jpg",
"id": "13",
"description": "MovieDescription"
}
]
}
Using the Maven JSON library, I can fetch the results key as a string using json.get("results").
returning:
[
{
"poster_path": "aaaaa.jpg",
"id": "11",
"description": "MovieDescription"
},
{
"poster_path": "bbbbb.jpg",
"id": "12",
"description": "MovieDescription2"
},
{
"poster_path": "ccccc.jpg",
"id": "13",
"description": "MovieDescription"
}
]
But I want to convert the first of these results to another JSONObject so that I can get the movie's id from the first result.
I'm thinking that the way to do this is to convert the results value to a list of JSONObject and then use the json.get("id") method on the first object in the list. But I do not know how to do this conversion.
Any help would be appreciated.

You can use JSONObject.getJSONArray to get the result directly as a JSON Array:
JSONArray results = json.getJSONArray("results") // Get results as JSON Array
JSONObject first = results.getJSONObject(0) // Get first object as JSON Object
See: JSONObject#getJSONArray(String)

In Android : How to retrieve all phone numbers and all email(primary , work, other) of all my contacts

I need to retrive all contacts with all phone numbers , email ids in a json object like(sample single contact object) :
[{
"id": 123,
"displayName": "Name",
"company": "Company",
"title": "Title",
"numbers": [{
"type": "home",
"number": "957842"
}, {
"type": "work",
"number": "54654654"
}, {
"type": "other",
"number": "465454"
}, {
"type": "other",
"number": "5465431"
}, {
"type": "other",
"number": "54321"
}, {
"type": "other",
"number": "6546545"
}],
"emails": [{
"type": "home",
"email": "asd#gmail.com"
}, {
"type": "work",
"email": "asdas#gmail.com"
}, {
"type": "other",
"email": "asdasd#gmail.com"
}, {
"type": "other",
"email": "sdasdmail.com"
}]
}]
Snippet from my current code looks like :
String searchQuery = "_id > " + lastReadId;
Cursor contactUrl = cContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,searchQuery,null,"_id ASC");
Log.e(TAG, "getContact >> " + contactUrl.getCount());
while (contactUrl.moveToNext())
{
objChild = new JSONObject();
String name=contactUrl.getString(contactUrl.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String number=contactUrl.getString(contactUrl.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
int phoneContactID = contactUrl.getInt(contactUrl.getColumnIndex(ContactsContract.CommonDataKinds.Phone._ID));
int phone_type = contactUrl.getInt(contactUrl.getColumnIndex(Phone.TYPE));
objChild.put("name",name);
objChild.put("number",number);
objChild.put("phone_type", number);
Log.e(TAG, "objChild : " + objChild.toString());
My current contact is like :
http://i.stack.imgur.com/MNuWH.png
http://i.stack.imgur.com/fs8Qk.png
Whatever code I got in stackoverflow was giving me single phone number of contacts or multiple contacts which have multiple numbers(I can manipulate same but it will take good time and may lead to performance issue)
My requirement is to get all phone numbers & emailids of a single contact.

I will suggest you to use Gson in your project for easy JSON parsing
Step 1
Open jsonschema2pojo website.
Ste 2
Copy/Paste your JSON string in given space and select below options to use with Gson.
Enter packagename and classname as per your requirement
select JSON as source type
select Gson as annotation style
Step 3
Click on Preview button to get ready made classes. Copy paste full classes in your application. Else you can also select jar to get classes.
Ste 4
Download and Add Gson library to your project
Download Gson : google-gson
Step 5
Final step. Write below short line of code to convert JSON string to class objects
Gson gson = new Gson();
List<PersonBean> details = gson.fromJson(strJsonData, PersonBean.class);
References :
https://sites.google.com/site/gson/gson-user-guide
https://dzone.com/articles/be-lazy-productive-android
http://www.javacodegeeks.com/2011/01/android-json-parsing-gson-tutorial.html

how to get the value of lat and lng from the json

I have a json response.I want to get the value of lat and lng from the json response.But i didn't get the values.Please Help me.Below is my response.
{
"html_attributions": [],
"results": [
{
"geometry": {
"location": {
"lat": 9.493837,
"lng": 76.338506
}
},
"icon": "http://maps.gstatic.com/mapfiles/place_api/icons/generic_business-71.png",
"id": "2730a3d7ab068d666e61a02ce6160b4cd21a38c7",
"name": "Nagarjuna",
"place_id": "ChIJr0-U4vSECDsRtiALUlgZOzI",
"reference": "CmRcAAAA4yl72_x5llqvdshRJwuuntunXrYu33qdP5G7-I0CdHzcDsyd6wwqjxdNeqvT6vtRIoDoIk_WGNd62SYSoNEdBrpDrOcf5g5eZMj_vobhmF11mrujsQ_Yc7p-oGxQH0XtEhDNJdjQf_WlK_dRAckBzlA3GhQ_wzXs5RxoaxWDSEurm_R5syuovg",
"scope": "GOOGLE",
"types": [
"hospital",
"establishment"
],
"vicinity": "State Highway 40, Kodiveedu, Alappuzha"
},
{
"geometry": {
"location": {
"lat": 9.500542,
"lng": 76.341017
}
},
"icon": "http://maps.gstatic.com/mapfiles/place_api/icons/generic_business-71.png",
"id": "d5b6c81a53a346dea1263de7a777703bc72b8796",
"name": "SYDNEY OPTICALS",
"opening_hours": {
"open_now": true,
"weekday_text": []
},
"photos": [
{
"height": 422,
"html_attributions": [],
"photo_reference": "CnRnAAAA_jg-NlSrVKkDOP7wXhPhvFTD8NW4A4aDI_Ptl3F9c_qt9QwdztNTG9Cr51uGIphpEUMyhsTfhhaa-TlfoL8MUEffbguZJ1AhKUwzfe7Mbrvm2KW8Y1EQXVw_3FglxA4LM1hqWJCK_AV4xcvOw1vuHRIQ8_keBYr29H8jK145RQ_PkRoUgPZ0qzcSNdIntc2ZI4WvBIR-TBQ",
"width": 630
}
],
"place_id": "ChIJl9tvIV6ECDsR7Cmf3KkIl-4",
"reference": "CnRjAAAA3qhFUcb8P9akE8xw-KwfF6OU6qvy2cVX4Sg0qK_xCOfeUEyxoFgwof8rk-Z2BBJ7Z4m7ZTbfdp78wqFbeLfojQWPldq7XDfzX0pLScBSysebEp9P4XmrsAO5qyqSUveb5jWcJDkYiOLKgaKMzoWQphIQbldrdJ9iEDHkGiQ7tleNYxoUnjcjcynUDMftaErRUQbOn-GkWj0",
"scope": "GOOGLE",
"types": [
"store",
"hospital",
"health",
"establishment"
],
"vicinity": "Mullakkal, Alappuzha"
}
],
"status": "OK"
}
This is the google api response i used for getting the list of hospitals.Anybode plese help me.Thanks in advance.

Use these steps:
Create a model class for that Json Response
Use Gson to parse the response
Then create an object of the class
using the object get the data variable from the class

I hope I can help.
First, validate your JSON with http://jsonlint.com/
Second, use this site to generate POJO: http://www.jsonschema2pojo.org/
make sure that Annotation GSON and Source type JSON are clicked ON!
Copy your classes in to your project.
Third: use GSON in Android :) (Retrofit is good for this)

Supposing you use the json.org Implementation for Java:
String response = "{\"html_attributions\": [], \"results\": ...";
JSONObject jo = new JSONObject(response);
JSONObject result = jo.getJSONArray("results").getJSONObject(0);
JSONObject location = result.getJSONObject("geometry").getJSONObject("location");
double lat = location.getDouble("lat");
double lng = location.getDouble("lng");

try this
String response = "{\"html_attributions\": [], \"results\": ...";
JSONObject objResponce = new JSONObject(response);
JSONArray arrayResults=new JSONArray(objResponce.getString("results"));
if(arrayResults.length()>0)
{
for(int i=0;i<arrayResults.length();i++)
{
//--- get each json object from array -----
JSONObject objArrayResults = arrayResults.getJSONObject(i);
//--- get geometry json object from each object of array -----
JSONObject objGeometry=new JSONObject(objArrayResults.getString("geometry"));
//--- get location json object from geometry json object -----
JSONObject objLocation=new JSONObject(objGeometry.getString("location"));
System.out.println("Latitude :"+objLocation.getString("lat"));
System.out.println("Longitude :"+objLocation.getString("lng"));
}
}

Get sub-array from JSON

I parsing some data from a json file. Here is my JSON File.
[
{
"topic": "Example1",
"contact": [
{
"ref": [
1
],
"corresponding": true,
"name": "XYZ"
},
{
"ref": [
1
],
"name": "ZXY"
},
{
"ref": [
1
],
"name": "ABC"
},
{
"ref": [
1,
2
],
"name":"BCA"
}
] ,
"type": "Presentation"
},
{
"topic": "Example2",
"contact": [
{
"ref": [
1
],
"corresponding": true,
"name": "XYZ"
},
{
"ref": [
1
],
"name": "ZXY"
},
{
"ref": [
1
],
"name": "ABC"
},
{
"ref": [
1,
2
],
"name":"BCA"
}
] ,
"type": "Poster"
}
]
I can fetch and store data one by one. Like this one
JSONArray getContactsArray = new JSONArray(jsonObject.getString("contact"));
for(int a =0 ; a < getContactsArray.length(); a++)
{
JSONObject getJSonObj = (JSONObject)getContactsArray.get(a);
String Name = getJSonObj.getString("name");
}
1)Now, my question is there any way to get all name values for each array with single query.
2) Can I get all those values in an Array ?
Please correct me, if I am doing anything wrong. Thank you.

Iteration cannot be avoided here as org.json and other Json parsers as well provide random access to objects but not to their properties collectively (as a collection). So, you can't query something like "all name properties of all contact objects" unless you probably get a Json parser like Gson to unmarshall it that way.
But, that's too much to just avoid a for loop when you can definitely shorten the parse by making use of the appropriate API methods to avoid unnecessary object casts.
JSONArray contacts = jsonObject.getJSONArray("contact");
String[] contactNames = new String[contacts.length()];
for(int i = 0 ; i < contactNames.length; i++) {
contactNames[i] = contacts.getJSONObject(i).getString("name");
}

Better to use a json parser such as GSon or Jackson to marshall your json to a java object. Then you can write utitlity method in your java class to retrieve all the names in that object.

Try this:
Create JSONObject of your file and try to get array of all names and iterate it to get all values.
public static String[] getNames(JSONObject jo) {
int length = jo.length();
if (length == 0) {
return null;
}
Iterator i = jo.keys();
String[] names = new String[length];
int j = 0;
while (i.hasNext()) {
names[j] = (String) i.next();
j += 1;
}
return names;
}