JSON to Java Converter

Generate production-ready Java POJO classes from JSON with Jackson, Gson, or Lombok annotations.

Class Package Library Fields Getters/SettersConstructorstoString()Use long

JSON Input

Java Output

3 classes

import java.util.List;
public class Root {

    private int id;

    private String name;

    private String email;

    private boolean isActive;

    private int age;

    private double balance;

    private Address address;

    private List<String> tags;

    private List<Orders> orders;

    public Root() {
    }

    public Root(int id, String name, String email, boolean isActive, int age, double balance, Address address, List<String> tags, List<Orders> orders) {
        this.id = id;
        this.name = name;
        this.email = email;
        this.isActive = isActive;
        this.age = age;
        this.balance = balance;
        this.address = address;
        this.tags = tags;
        this.orders = orders;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public boolean isIsActive() {
        return isActive;
    }

    public void setIsActive(boolean isActive) {
        this.isActive = isActive;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public double getBalance() {
        return balance;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

    public List<String> getTags() {
        return tags;
    }

    public void setTags(List<String> tags) {
        this.tags = tags;
    }

    public List<Orders> getOrders() {
        return orders;
    }

    public void setOrders(List<Orders> orders) {
        this.orders = orders;
    }

}

public class Address {

    private String street;

    private String city;

    private String zipCode;

    private String country;

    public Address() {
    }

    public Address(String street, String city, String zipCode, String country) {
        this.street = street;
        this.city = city;
        this.zipCode = zipCode;
        this.country = country;
    }

    public String getStreet() {
        return street;
    }

    public void setStreet(String street) {
        this.street = street;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getZipCode() {
        return zipCode;
    }

    public void setZipCode(String zipCode) {
        this.zipCode = zipCode;
    }

    public String getCountry() {
        return country;
    }

    public void setCountry(String country) {
        this.country = country;
    }

}

public class Orders {

    private String orderId;

    private double total;

    private int items;

    public Orders() {
    }

    public Orders(String orderId, double total, int items) {
        this.orderId = orderId;
        this.total = total;
        this.items = items;
    }

    public String getOrderId() {
        return orderId;
    }

    public void setOrderId(String orderId) {
        this.orderId = orderId;
    }

    public double getTotal() {
        return total;
    }

    public void setTotal(double total) {
        this.total = total;
    }

    public int getItems() {
        return items;
    }

    public void setItems(int items) {
        this.items = items;
    }

}

How to Use

Paste your JSON or upload a .json file in the input panel.
Configure options: class name, package, library (Jackson/Gson/Lombok), and code style.
The Java class is generated instantly in the output panel.
Copy to clipboard or download as a .java file.

Frequently Asked Questions

How does JSON to Java conversion work?

The tool parses your JSON, analyzes the structure and data types, then generates Java POJO classes with proper type mappings. Nested objects become separate classes, arrays become List<T>, and primitive types are inferred from the values.

Does it support Jackson and Gson annotations?

Yes. Select Jackson to add @JsonProperty annotations, Gson to add @SerializedName annotations, or Lombok to add @Data, @NoArgsConstructor, and @AllArgsConstructor annotations automatically.

Is my JSON data secure?

Yes. All processing happens entirely in your browser. Your JSON is never uploaded to any server.

Can it handle nested JSON objects?

Yes. Each nested object generates a separate Java class. Arrays of objects also create proper List<ClassName> fields with corresponding class definitions.

Can I download the generated Java code?

Yes. Click the Download button to save the output as a .java file ready to use in your project.