JSON deserializing not happening

Question

I'm trying to deserialize a List of JSON objects in Apex. Here is the JSON being passed:

[
 {
  "Name":"TestUser1",
  "Interview_Information":{
     "Interviewer":"JTA Test",
     "CandidateStage":"Final ROund",
     "Recommendation":"Hire!",
     "Candidate_Name":"JTA Test",
     "Competency":[
        {
           "Competency":"Team Player",
           "Question":"Describe when you failed on a team",
           "Rating":"Advanced",
           "Candidate_Name":"JTA Test"
        }
     ]
  }
 }
]

And here is my APEX code :

public class DeserializeJSON {
 public String PDFData {get; set;}

 public DeserializeJSON() {
    PDFData = '';
 }

 public void deserialize() {
   List<DeserializeJSON.CandidateSummary> allCandidates = (List<DeserializeJSON.CandidateSummary>)JSON.deserialize(PDFData, List<DeserializeJSON.CandidateSummary>.class);
    system.debug('allCandidates = '+allCandidates);
 }

public class CandidateSummary {
    public String Name {get; set;}
    public Interview_Information Interview_Information {get; set;}
}

public class Interview_Information {
    public String Interviewer;
    public String CandidateStage;
    public String Recommendation;
    public String Candidate_Name;
    public List<Competency> Competency;
}

public class Competency {
    public String Competency;
    public String Question;
    public String Rating;
    public String Candidate_Name;
}

UPDATE : I updated my code as per the SFDC's suggestion -- none of my debug statements are showing up on dev console now.

Answer 1

Because Interview_Information is another object. Here's what you'd change:

public class Interview {
    public String Name;
    public Interview_Information Interview_Information;
}
public class Interview_Information {
    public String Interviewer;
    public String CandidateStage;
    public String Recommendation;
    public String Candidate_Name;
    public List<Competency> Competency;
}
public class Competency {
    public String Competency;
    public String Question;
    public String Rating;
    public String Candidate_Name;
}

And:

List<DataDisplayController.Interview> allCandidates = (List<DataDisplayController.Interview>)JSON.deserialize(PDFData, List<DataDisplayController.Interview>.class);