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 ... \"age\":34}]"; // Convert JSON array to JSONArray JSONArray jsonArray = new JSONArray(jsonArrayString); // Convert JSONArray to ArrayList ArrayList<JSONObject> arrayList = new ArrayList<>(); for (int i = 0; i < jsonArray.length(); i++) { ...
Baeldung
baeldung.com › home › json › jackson › convert json array to java list
Convert JSON Array to Java List | Baeldung
August 13, 2025 - Learn how to convert a JSON array to a Java List using the popular Gson and Jackson libraries.
Coderanch
coderanch.com › t › 697439 › java › convert-JSON-Array-arraylist
how to convert JSON Array to arraylist (Java in General forum at Coderanch)
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.
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.
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... or new TypeToken<List<String>>() {} in Gson. In Org.json, new JSONArray(json).toList() returns the strings as a List<Object>. Call writeValueAsString(list) on the Jackson mapper or toJson(list) ...
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...
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 - import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; import java.util.List; import java.io.IOException; import java.util.ArrayList; public class JsonArrayToList{ public static void main(String[] args) { String jsonArray = "[{"name":"John","age":30},{"name":"Jane","age":25}]"; ObjectMapper objectMapper = new ObjectMapper(); try { List<Person> personList = objectMapper.readValue(jsonArray, new TypeReference<List<Person>>(){}); for (Person person : personList) { System.out.println("Name: " + person.getName() + ", Age: " + person.getAge()); } }
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 - In this tutorial, we'll use Jackson with Java to convert a JSON array into a Java array and a Java List with examples. This can be done from Strings or Files.
Mkyong
mkyong.com › home › java › how to parse json array with jackson
How to parse JSON Array with Jackson | mkyong.com
April 23, 2024 - convert JSON array to Array objects ... System.out.println(p); } // 2. convert JSON array to List List<Person> person2 = mapper.readValue(jsonArray, new TypeReference<>() { }); person2.forEach(System.out::println); } } ... Person{name='mkyong', ...
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.
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.
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;
}
}
Java Code Geeks
examples.javacodegeeks.com › home › java development › core java
JSON array to List - Java Code Geeks
October 2, 2023 - package com.jcg.example; import ... = gson.fromJson(jsonArrayString, String[].class); ArrayList<String> arrayList = new ArrayList<>(Arrays.asList(jsonArray)); // Output the ArrayList System.out.println("ArrayList: " + ...
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
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")); }
Level Up Lunch
leveluplunch.com › java › examples › convert-json-array-to-arraylist-gson
Json array to ArrayList gson | Level Up Lunch
August 10, 2014 - This example will demonstrate how to convert a json array to a java ArrayList using gson JSON parser. In the set up, we will create a sample json array to represent navigation elements and a java object to unmarshall into java object named NavItem.
Top answer 1 of 9
138
If I read the JSONArray constructors correctly, you can build them from any Collection (arrayList is a subclass of Collection) like so:
ArrayList<String> list = new ArrayList<String>();
list.add("foo");
list.add("baar");
JSONArray jsArray = new JSONArray(list);
References:
- jsonarray constructor: http://developer.android.com/reference/org/json/JSONArray.html#JSONArray%28java.util.Collection%29
- collection: http://developer.android.com/reference/java/util/Collection.html
2 of 9
77
Use Gson library to convert ArrayList to JsonArray.
Gson gson = new GsonBuilder().create();
JsonArray myCustomArray = gson.toJsonTree(myCustomList).getAsJsonArray();