create dynamic objects using spring boot hashmap

Question

i wrote the below code to form custom objects. but its returning only single object. like below

{"fathername":null,"name":"ks"}

but i want like below(array object)

[{"name":"test","fathername":"test123"},{"name":"ks","fathername":null}]

but it is returning single object. what i am missing here, please pour your suggestions

public HashMap<String, String> applicantlistv2() {      
    List<Applicant> users = repository.findAll();
    
    HashMap<String, String> myhash = new HashMap<String, String>();
   
    
    for (Applicant applicant : users) {
        myhash.put("fathername", applicant.getFather_name());
        myhash.put("name", applicant.getFirst_name());
        
        System.out.println(applicant.getFirst_name());

    }

 //return repository.findAll();
    return myhash;
}

Answer 1

For each iteration you are replacing the same key. So only the data in the last iteration would be available.

Replace the code as follows:

List<Map<String, String>> myhash = new ArrayList<>();       
for (Applicant applicant : users) {
    Map<String, String> map = new HashMap<>();
    map.put("fathername", applicant.getFather_name());
    map.put("name", applicant.getFirst_name());
    myhash.add(map);
    System.out.println(applicant.getFirst_name());
}

return myhash;