I have a very simple question which doesnt seem to have an answer.
I have an object which has 2 objects with same type inside it and they are not arrays. How do i represent it in json?
GroupOfEmployees{
Employee emp1;
Employee emp2;
}
Employee{
String name;
int id;
}
emp1 details: name:first id: 1
emp2 details: name: second id:2
Make a JSONArray:
[
{
name: "name1",
id: = id1 },
{
name: "name2",
id: = id2 }
]
if you are looking for the json object which represents GroupOfEmployees object then the sample json will be something like below
{
"emp1": {
"name": "name1",
"id": 1
},
"emp2": {
"name": "name2",
"id": 2
}
}
update
when you convert above json into object, you will get an object which holds two employee objects with name emp1 & emp2. Consider the following example
The following is your Employee Class:
public class Employee {
private String name;
private int id;
public Employee(String name, int id) {
this.name = name;
this.id = id;
}
// getter & setter methods
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("Employee [name=");
builder.append(name);
builder.append(", id=");
builder.append(id);
builder.append("]");
return builder.toString();
}
}
The following is GroupOfEmployees class:
public class GroupOfEmployees {
private Employee emp1;
private Employee emp2;
// getters & setters method
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("GroupOfEmployees [emp1=");
builder.append(emp1);
builder.append(", emp2=");
builder.append(emp2);
builder.append("]");
return builder.toString();
}
}
here goes main method:
public static void main(String[] args) {
Employee emp1 = new Employee("name1", 1);
Employee emp2 = new Employee("name2", 2);
GroupOfEmployees groupOfEmployees = new GroupOfEmployees();
groupOfEmployees.setEmp1(emp1);
groupOfEmployees.setEmp2(emp2);
Gson gson = new GsonBuilder().create();
String jsonValue = gson.toJson(groupOfEmployees);
System.out.println("jsonValue = " + jsonValue);
GroupOfEmployees newGroup = gson.fromJson(jsonValue, GroupOfEmployees.class);
System.out.println("Object value = " + newGroup);
}
and finally output is :
jsonValue = {"emp1":{"name":"name1","id":1},"emp2":{"name":"name2","id":2}}
Object value = GroupOfEmployees [emp1=Employee [name=name1, id=1], emp2=Employee [name=name2, id=2]]
