ArrayList<String> listdata = new ArrayList<String>();
JSONArray jArray = (JSONArray)jsonObject;
if (jArray != null) {
for (int i=0;i<jArray.length();i++){
listdata.add(jArray.getString(i));
}
}
Top answer 1 of 16
204
ArrayList<String> listdata = new ArrayList<String>();
JSONArray jArray = (JSONArray)jsonObject;
if (jArray != null) {
for (int i=0;i<jArray.length();i++){
listdata.add(jArray.getString(i));
}
}
2 of 16
85
I've done it using Gson (by Google).
Add the following line to your module's build.gradle:
dependencies {
// ...
// Note that `compile` will be deprecated. Use `implementation` instead.
// See https://stackoverflow.com/a/44409111 for more info
implementation 'com.google.code.gson:gson:2.8.2'
}
JSON string:
private String jsonString = "[\n" +
" {\n" +
" \"id\": \"c200\",\n" +
" \"name\": \"Ravi Tamada\",\n" +
" \"email\": \"ravi@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c201\",\n" +
" \"name\": \"Johnny Depp\",\n" +
" \"email\": \"johnny_depp@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c202\",\n" +
" \"name\": \"Leonardo Dicaprio\",\n" +
" \"email\": \"leonardo_dicaprio@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c203\",\n" +
" \"name\": \"John Wayne\",\n" +
" \"email\": \"john_wayne@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c204\",\n" +
" \"name\": \"Angelina Jolie\",\n" +
" \"email\": \"angelina_jolie@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"female\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c205\",\n" +
" \"name\": \"Dido\",\n" +
" \"email\": \"dido@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"female\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c206\",\n" +
" \"name\": \"Adele\",\n" +
" \"email\": \"adele@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"female\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c207\",\n" +
" \"name\": \"Hugh Jackman\",\n" +
" \"email\": \"hugh_jackman@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c208\",\n" +
" \"name\": \"Will Smith\",\n" +
" \"email\": \"will_smith@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",\n" +
" \"home\": \"00 000000\",\n" +
" \"office\": \"00 000000\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"id\": \"c209\",\n" +
" \"name\": \"Clint Eastwood\",\n" +
" \"email\": \"clint_eastwood@gmail.com\",\n" +
" \"address\": \"xx-xx-xxxx,x - street, x - country\",\n" +
" \"gender\" : \"male\",\n" +
" \"phone\": {\n" +
" \"mobile\": \"+91 0000000000\",BeginnersBook
beginnersbook.com › 2024 › 06 › convert-json-array-to-arraylist-in-java
Convert JSON Array to ArrayList in Java
June 13, 2024 - 2. Parse the JSON Array and Convert ... JSONArray jsonArray = new JSONArray(jsonArrayString); // Convert JSONArray to ArrayList ArrayList<JSONObject> arrayList = new ArrayList<>(); for (int i = 0; i < jsonArray.length(); i++) { arrayList.add(jsonArray.getJSONObject(i)); } // ...
09:17
GSON: Array or List as root of JSON - YouTube
07:05
57. Convert Simple JSON Array Response To POJO Using Java List ...
17:31
Parse JSON to Java Object,ArrayList & Array Using Jackson Library ...
17:51
36. Create Simple JSON Arrays Payload Using Java List - YouTube
03:15
Java JSON Array Encode Using ArrayList - YouTube
Baeldung
baeldung.com › home › json › jackson › convert json array to java list
Convert JSON Array to Java List | Baeldung
August 13, 2025 - In this section, we’ll discuss how to convert a JSON array to a List using Jackson: @Test public void whenUsingJacksonLibrary_thenCompareTwoProducts() throws JsonProcessingException { // The jsonArray is the same JSON array from the above example ObjectMapper objectMapper = new ObjectMapper(); TypeReference<List<Product>> jacksonTypeReference = new TypeReference<List<Product>>() {}; List<Product> jacksonList = objectMapper.readValue(jsonArray, jacksonTypeReference); Assert.assertEquals(1, jacksonList.get(0).getId()); Assert.assertEquals("Sweet and cold", jacksonList.get(0).getDescription()); Assert.assertEquals("Icecream", jacksonList.get(0).getName()); }
Javatpoint
javatpoint.com › how-to-convert-json-array-to-arraylist-in-java
How to Convert JSON Array to ArrayList in Java - Javatpoint
How to Convert JSON Array to ArrayList in Java with java tutorial, features, history, variables, object, programs, operators, oops concept, array, string, map, math, methods, examples etc.
Coderanch
coderanch.com › t › 697439 › java › convert-JSON-Array-arraylist
how to convert JSON Array to arraylist (Java in General forum at Coderanch)
Java in General · Melody Putri · Greenhorn · Posts: 1 · posted 8 years ago · Number of slices to send: Optional 'thank-you' note: Send · Hi, I'm receiving data in form of JSON Array. Here's the JSON Array that i've received : [{"FOODID":"Jus Alpukat","PRICE":"7000","NUM":"1","RES":"7000.0","ORDERID_FK":""},{"FOODID":"Ice Cream","PRICE":"5000","NUM":"10","RES":"50000.0","ORDERID_FK":""}] i need it to be converted into arraylist that will be inserted into JTable into java.
How to do in Java
howtodoinjava.com › home › convert json array to list in java: jackson, gson, org.json
Convert JSON Array to List in Java: Jackson, Gson, Org.json
2 weeks ago - JsonMapper mapper = JsonMapper... JSONArray(json).toList() returns the strings as a List<Object>. Call writeValueAsString(list) on the Jackson mapper or toJson(list) on Gson....
Top answer 1 of 2
3
It is not specified, which JSON parser do you use, so I suppose you can choose right now and I'll suggest using Gson as such.
The better solution for deserializing such a structures is creating a special class for each structure, for example:
public class NameURIPair {
private String name;
private String URI;
// getters
}
Then your JSON can be deserialized into a class, which holds the resulting List in it:
public class Data {
private List<NameURIPair> output;
// getter
}
// ...
Data data = new Gson(stringData, Data.class);
Since you've requested the other way, you still can get just the parsed JSON into JsonElement with JsonParser
JsonElement root = new JsonParser().parse(stringData);
Although I won't give you the full solution not to appreciate this kind of solutions :-)
2 of 2
2
Aazelix, your Json output seem to be missing opening array bracket. Its correct form is listed below:
{"output":[{"name":"Name3","URI":"Value3"},{"name":"Name5","URI":"Value5"},{"name":"Name4","URI":"Value4"}]}
As for the conversion to POJO
List<MyObj> list = new ArrayList<>();
if (outputs!= null) {
int len = outputs.length();
for (int i=0; i<len; i++) {
JSONObject o = (JSONObject) outputs.get(i);
list.add(new MyObj(o.getString('name'), o.getString('URL')));
}
}
System.out.println("There is " + list.size() + " objects.");
public static final class MyObj {
final String name;
final String url;
public MyObj(String name, String url) {
this.name = name;
this.url = url;
}
}
Top answer 1 of 3
2
You can use this block of code to convert JSONArray to the arraylist object.
JSONArray jsonArray=new JSONArray();
arrayList=new ArrayList();
n=jsonArray.length();
for (int i=0;i<n;i++)
arrayList.add(jsonArray.get(i));
Happy coding!!
2 of 3
0
Internally this JsonArray implements list interface so type casting to List is perfectly fine. Moreover iterating each and every element will access list one by one which will be overhead(Performance impact).
If you need alternate way you can use toCollection static method from the same JsonArray class
Top answer 1 of 16
196
ArrayList<String> list = new ArrayList<String>();
JSONArray jsonArray = (JSONArray)jsonObject;
if (jsonArray != null) {
int len = jsonArray.length();
for (int i=0;i<len;i++){
list.add(jsonArray.get(i).toString());
}
}
2 of 16
63
If you don't already have a JSONArray object, call
JSONArray jsonArray = new JSONArray(jsonArrayString);
Then simply loop through that, building your own array. This code assumes it's an array of strings, it shouldn't be hard to modify to suit your particular array structure.
List<String> list = new ArrayList<String>();
for (int i=0; i<jsonArray.length(); i++) {
list.add( jsonArray.getString(i) );
}
TutorialsPoint
tutorialspoint.com › article › how-can-we-convert-a-json-array-to-a-list-using-jackson-in-java
How can we convert a JSON array to a list using Jackson in Java?
June 5, 2025 - Use the ObjectMapper class to read the JSON array and convert it to a list of objects.
Stack Abuse
stackabuse.com › converting-json-array-to-a-java-array-or-list
Convert JSON Array to a Java Array or List with Jackson
September 8, 2020 - Without using TypeReference<>, which is advised, you can convert the array into a list with any other approach at your disposal, such as: List<Language> langList = new ArrayList(Arrays.asList(langs)); ... Check out our hands-on, practical guide to learning Git, with best-practices, ...
Mkyong
mkyong.com › home › java › how to parse json array with jackson
How to parse JSON Array with Jackson | mkyong.com
April 23, 2024 - In Jackson, we can convert the JSON array to an Array or List. ... package com.mkyong.json.jackson; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import com.mkyong.json.model.Person; import java.util.List; public class JsonArrayToObjectExample { public static void main(String[] args) throws JsonProcessingException { String jsonArray = "[{\"name\":\"mkyong\", \"age\":42}, {\"name\":\"ah pig\", \"age\":20}]"; ObjectMapper mapper = new ObjectMapper(); // 1.
HowToDoInJava
howtodoinjava.com › home › gson › gson – parse json array to java array or list
Gson - Parse JSON Array to Java Array or List
April 4, 2023 - Here ArrayItem is the class type of data elements in the array. ArrayItem[] userArray = new Gson().fromJson(jsonSource, ArrayItem[].class); For converting such JSON array to a List, we need to use TypeToken class.
Java Code Geeks
javacodegeeks.com › home › core java
Converting JSON Array to Java List with Gson - Java Code Geeks
April 25, 2024 - This method entails manual traversal of the JSON array, with each element converted into a Java object. Here’s a practical implementation: String json = "[{\"name\":\"John\"},{\"name\":\"Doe\"}]"; JsonArray jsonArray = JsonParser.parseStr...
Java Code Geeks
examples.javacodegeeks.com › home › java development › core java
JSON array to List - Java Code Geeks
October 2, 2023 - Here’s a working example of how to use the Gson library to convert a JSON array to an ArrayList. ... package com.jcg.example; import com.google.gson.Gson; import java.util.ArrayList; import java.util.Arrays; public class Main { public static ...
Tpoint Tech
tpointtech.com › how-to-convert-json-array-to-arraylist-in-java
How to Convert JSON Array to ArrayList in Java - Tpoint Tech
July 1, 2026 - In Java, JSON plays an important role in storing data. ArrayList is a special type of Array whose size is dynamic.
Apps Developer Blog
appsdeveloperblog.com › home › java › java json › convert json array to java list using jackson
Convert JSON Array to Java List using Jackson - Apps Developer Blog
March 22, 2024 - The converted object is then added to the list. Consider the following code snippet for a complete example: import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; import java.util.ArrayList; import java.util.List; public class ManualConversionExample { public static void main(String[] args) { String jsonArrayString = "[{\"id\": 1, \"name\": \"John\"}, {\"id\": 2, \"name\": \"Jane\"}]"; ObjectMapper objectMapper = new ObjectMapper(); try { JsonNode jsonArray = objectMapper.readTree(jsonArrayString); List<Person> personList = new ArrayList<>(); for (J
Stack Overflow
stackoverflow.com › questions › 34083367 › how-to-convert-json-array-to-java-arraylist-object
How to convert JSON Array to Java ArrayList object - Stack Overflow
I want to convert the above JsonArray ... ... JSONArray arr = new JSONArray(yourJSONresponse); List<String> list = new ArrayList<String>(); for(int i = 0; i < arr.length(); i++){ list.add(arr.getJSONObject(i).getString("name")); }...
Top answer 1 of 2
1
You've got two main issues. The first is that "videoID" and "videoId" are not the same string. So you're checking for a key that doesn't exist.
Your second problem is that the "videoId" key doesn't exist in the top level object, it's inside the "id" object, so you need to drill down an extra layer to get it:
JSONArray jsonArray = myResponse.getJSONArray("items");
ArrayList<String> list = new ArrayList<>();
for (int i = 0; i < jsonArray.length(); i++) {
try {
JSONObject json = jsonArray.getJSONObject(i);
JSONObject id = json.getJSONObject("id");
list.add(id.getString("videoId"));
} catch (JSONException e) {
e.printStackTrace();
}
}
System.out.println(list); // [ob1ogBV9_iE, o9vsXyrola4]
2 of 2
0
Try with correct case for videoId, like
list.add(json.getString("videoId"));