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Convert Java pojo to json String

By : Ben
Date : September 14 2020, 06:00 PM
Any of those help You can use ObjectMapper or Gson for Class to JSON conversion and vice-versa.
(I would recommend ObjectMapper)
code :

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how to convert a Java POJO to JSON string?

By : JustinBM
Date : March 29 2020, 07:55 AM
This might help you XStream or GSON, as mentioned in the other answer, will sort you. Follow the JSON tutorial on XStream and your code will look something like this:
code :
        CreateRequisitionRO product = new CreateRequisitionRO();
        XStream xstream = new XStream(new JettisonMappedXmlDriver());
        xstream.alias("product", Product.class);

CreateRequisitionRO obj = new CreateRequisitionRO();
Gson gson = new Gson();
String json = gson.toJson(obj); 

java jackson: get from url rest web service call pojo's (with inner pojo's) as json and map them back to pojo

By : srinivas
Date : March 29 2020, 07:55 AM
Hope that helps SOLUTION thanks to @peeskillet:
MyPojo myPojo = mapper.readValue(connection.getInputStream(), MyPojo.class);

How to convert the following JSON String to POJO

By : user6336450
Date : March 29 2020, 07:55 AM
help you fix your problem I think it should work. I've executed this code and it works fine. Here is my example.
code :
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;

public class TestJackson {

public static void main(String[] args) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        String testJson = "{\n" + "  \"user\": {\n" + "    \"0\": {\n" + "      \"firstName\": \"Monica\",\n" + "      \"lastName\": \"Belluci\"\n" + "    },\n" + "    \"1\": {\n" + "      \"firstName\": \"John\",\n" + "      \"lastName\": \"Smith\"\n" + "    },\n" + "    \"2\": {\n" + "      \"firstName\": \"Owen\",\n" + "      \"lastName\": \"Hargreaves\"\n" + "    }\n" + "  }\n" + "}";
        User readValue = mapper.readValue(testJson, User.class);
        System.out.println("readValue = " + readValue);
import java.util.HashMap;
import java.util.Map;

class User {
    private Map<String, MyObject> user = new HashMap<String, MyObject>();

    public Map<String, MyObject> getUser() {
        return user;

    public void setUser(Map<String, MyObject> user) {
        this.user = user;

    public String toString() {
        return "User{" +
                "user=" + user +

class MyObject {
    private String firstName;
    private String lastName;

    public String getFirstName() {
        return firstName;

    public void setFirstName(String firstName) {
        this.firstName = firstName;

    public String getLastName() {
        return lastName;

    public void setLastName(String lastName) {
        this.lastName = lastName;

    public String toString() {
        return "MyObject{" +
                "firstName='" + firstName + '\'' +
                ", lastName='" + lastName + '\'' +

How to use Google/GSON to convert a JSON string into Java POJO?

By : conviva device
Date : March 29 2020, 07:55 AM
To fix this issue Generate your POJO by using http://www.jsonschema2pojo.org/ or by adding plugin in studio (https://github.com/Hexara/Json2Pojo)
now add dependencies compile 'com.google.code.gson:gson:2.6.2':
code :
Gson gson = new Gson();
POJOClass pojo = gson.fromJson(jsonObject.toString(), new TypeToken<POJOClass>() {}.getType());

How to convert json string in Java POJO

By : Rick Castorani
Date : March 29 2020, 07:55 AM
may help you . Your Test object holds a single Result object, however the JSON has the result field holding an array of objects. The item in the array is a string, followed by what looks like a Result object.
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