Questions tagged [arraylist]

The array list, a versatile data structure commonly used in programming languages like Java or .NET, combines the advantages of both arrays and lists. It harnesses the power of arrays to implement a dynamic list, making it a valuable tool in various applications.

Tips for adding an array to an array of objects with AngularJs

I'm facing an issue with the array structure in my code. Here's what I currently have: $scope.arrayList=[{FirstName:"",LastName:""}]; $scope.Address=[{address:"",PhoneNumber:""}]; What I want to achieve is to push the $scope.Address array into the first ...

Is there a way for me to interpret and process this JSON data?

AngularJS is receiving JSON data from an ArrayList through a get request. The data includes information such as ID, area, gender, and highest education level. 0: Object id:1 area: "State" gender: "Both" highestEd: 36086 ...

Change a JSON String into an ArrayList to use in a Spinner

Received a JSON string from the server with the following values: {"server_response":[{"violation":"Driving with No Helmet"},{"violation":"Try"}]} Attempting to convert this JSON string into a String Array or ArrayList containing Driving with no Helmet a ...

Tips on identifying elements from 2 ArrayLists merged into a single ArrayList and using a ListViewAdapter

Apologies for the complex Title (it's hard to summarize my issue in a few words) Here is my current situation: I am working on an app that collects Stamps. I have a JSON file that contains 2 JSONArrays for "collectedStamp" and "unCollectedStamp". Th ...

From Android JSON array to a list of items

In my android app, I have encountered an issue while trying to parse a JSONArray into an ArrayList. The PHP script returns the expected results correctly, but when attempting to add the results to the ArrayList in Java, a null pointer exception occurs at ...

Obtaining and storing an array of JSON data from Socket.IO

Upon receiving an array of objects from my server, it looks like this: Log.i(TAG, "Destinos obtenidos: "+ destinosRuta); The log value is - Destinos obtenidos [{"Latitud":41.40404,"nombreDestino":"Barcelona","IDR":5,"IDD":6,"Longitud":2.168679},{"Latit ...

Exploring the automated retrieval of data from arrays in Java objects: A comprehensive guide

My goal is to automatically create Java objects from JSON data obtained from a REST API. The JSON array contains properties of different shops, and I aim to generate one object per shop with all its respective properties. The following code helped me achi ...

What is the process for converting an attribute ArrayList<String>, ArrayList<Integer>, or ArrayList<MYCLASS> from a JSON object into a Java object?

Being a novice in programming, I am currently attempting to save my objects as JSON in a text file. However, I have encountered difficulties when passing the JSON object to my constructor. Here is the structure of my 'Aluno' class: public class ...

Creating a JSON representation of a List with Jackson's JsonGenerator

Is it possible to use Jackson JsonGenerator to write a list of objects to JSON easily? I have a hashmap structured as Key,List and would like to add a List of Objects without looping through each one individually. I am using Jackson JsonGenerator to creat ...

Strange occurrences happen where objects are duplicated in the ArrayList when the debugger tool's 'step over' feature is used

Explaining this code is a bit challenging but it's designed to add items from a JSON array and display them on a ListView. The page refreshes using the onResume method that I have customized. public void onResume() { super.onResume(); if (a ...

The term "ArrayList HashMap" does not have a defined

Having trouble understanding why I'm encountering this error message "ArrayList<HashMap<String,String>>, int, String[], int[]) is undefined" // THE ERROR IS RIGHT HERE TO ListAdapter adapter = new SimpleAdapter(this, contactLi ...

Integrating List<class> into class xxx with JSON format

I am attempting to input data into one list and then transfer it to another list `{ { "name": "0001", "id": "donut", "total": { "price": [{ "date": "1001", "type": "Regular" }, { ...

Ways to include numerous entities obtained from a JSON object

I am facing an issue with my code involving two array lists. I am attempting to add multiple objects of the same type to one array list, but when I try to retrieve them from the array list, only the most recently added object is being returned. Below is t ...

The Gson library fails to properly format a singular variable extracted from a JSON string

I am currently facing an issue with converting a json format, which is an arraylist response from a rest webservice, into its corresponding java arraylist. Interestingly, out of the 3 variables in the json response, only 2 are successfully formatted into ...

Creating a JSON list

I am looking to create a JSON array object called "MainData" in Java. Does anyone have suggestions on how I can achieve this? { "MainData":{ "columnHeaderKeys":null, "rowHeaders":[ { "id":0001, "name":abcd }, ...

Show a distinct row from an API using React

I am attempting to create a map function to display all the items from the API Screenshot of code showing the items Here is the console log displaying the fetched items from the API I encountered an error with the map function not working. Any solutions ...

Decoding a JSON array containing multiple JSON objects into an ArrayList of org.json.JSONObject instances using Gson

I have a JSON string that looks like this: { "r": [ { "pic": "1.jpg", "name": "Name1" }, { "pic": "2.jpg", "name": "Name2" }, { "pic": "3.jpg", "name": "Name3" } ] } My goal is to convert it ...

Can you assist with adding elements to a list array and then locating their position or index within the list using Java and Selenium?

I've been working on a page where I need to extract the header items from a table and store them in a list. My end goal is to locate the position of "Attempt Date" within that list. List<String> headerList = new ArrayList<>(); List<WebElemen ...

JS issue: Having trouble accessing the array values despite the array being present

I am working on an ajax call where I save the success data in an array. However, when I try to access that data outside of the ajax function and use console to log my array, it appears as expected. Here is a glimpse at what I see on the screen: https://i ...

Tips for choosing a unique item from a list of values during each iteration of a loop in Python

Essentially, my goal is to retrieve a new item from a list every time I access that list. The structure of my list is as follows: <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c2b6a7b1b6a7afa3abaee9f282a5afa3abaeeca1adaf"> ...

Create a new ArrayList in Spring Boot by using the @RequestBody annotation

Here is the code snippet I am working with: @RequestMapping(value = "/checkInventory", consumes = "application/json", method = RequestMethod.POST) @ResponseBody public ResponseEntity<?> checkInventory ( // HEADERS @RequestBody CheckInventory ...

Ways to access an element in a Java ArrayList with two dimensions?

I recently converted a JSON string into a Java ArrayList and now I'm trying to retrieve a specific element from it. However, using .get(0).get(2) as an example doesn't seem to provide the desired result, as I discovered in another query. Upon using just ...

Discover the best way to showcase items within an arrayList using dual CSS styles!

I'm currently working on a project that involves an arrayList with two names: Bob and Steve. I have the requirement to display them in different colors, where Bob should be displayed in green and Steve in red. Component.CSS .Bob{ font-weight:bold; co ...

Extract specific data from a challonge.com JSON file and store it in an ArrayList using the Gson library

I am trying to extract specific values from a JSON file obtained from challonge.com. The values I need are the "id" and "name". For more information, please refer to . Here is the code snippet I am currently using: HttpClient client = HttpClients.creat ...

Obtain a list of keys corresponding to every element within the JSON array

I am looking to dynamically parse my JSON array and retrieve an array of keys for each element within the JSON array. I currently achieve this using an iterator, but the sequence does not match the output JSON format. JSON Format : { "result": "Success ...

Unchecking an available item observable in Knockout.js when clicking on a selected item

When you click on the elements in the top list, a selection is made. If you click on the elements in the bottom list, it will be removed from the list. However, the checkbox in the top list is not being unchecked. How can this issue be resolved? functio ...