carlWheezer :
I'm trying to read data out of a json file into my family class. When I try accessing the data I get a NPE
Gson gson = new Gson();
try (Reader reader = new FileReader("family.json")) {
Family family = gson.fromJson(reader, Family.class);
System.out.println(family.toString());
} catch (IOException e) {
e.printStackTrace();
}
Family class
public class Family {
List<Person> people;
Person class
public class Person {
private String firstname;
private String lastname;
json file
{ "members" : [
{"firstname":"asdf", "lastname":"asdf"},
{"firstname":"qwer", "lastname":"qwer"},
{"firstname":"fghj", "lastname":"fghj"}
]
}
Any help/tips would be appreciated
Code_Mode :
You are getting NPE because, json file is having members list and mapped Family
class has list of 'people'.
Change people list to members in Family class,
List<Person> members;
Hope it helps.
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