Pfthb

This seems like an easy problem, yet I am limited by my knowledge in java.

Consider the following code:

public void method1()
 Object1 obj = new Object1()
 @Override
 public void innerMethod(Object response)
 setList(response.list);
 // Displaying the result of the getter is for sample purposes
 System.out.println(getList().get(0).getName()); // This works and prints out the name of the first item.
 
 ;
 obj.execute(); // Suppose execute method is pre-defined and just means it'll execute the `innerMethod`.
 System.out.println(getList().get(0).getName()); // This returns null for the getList().

From what I understand about the execution at runtime, the list should be populated once method1 is run since innerMethod is the first one written.

Please help me understand why the second accessing of getList() returns null and how else can I access the data from innerMethod.

Note as well that I'm using getList() in another class, and there as well it returns null.

EDIT:
Below is the full code for above scenario.

public void callMusicAPI()
 Callback<SongList> callback = new Callback<SongListResponse>()
 @Override
 public void onResponse(Call<SongListResponse> call, Response<SongListResponse> response) 
 setSongListResult(response.body().getResults());
 Log.d(TAG, "Number of Songs received: " + Songs.size()); // This works.

 Log.d(TAG, "Actual Response from API Call: " + response.raw() + "" + success + " " + getSongListResult().get(1).getTitle()+getSongListResult().get(1).getRelease_date() ); //This works.
 

 @Override
 public void onFailure(Call<SongListResponse> call, Throwable throwable) 
 Log.e(TAG, throwable.toString());
 
 ;
 call.enqueue(callback);
 if(call.isExecuted()) 
 if (getSongListResult() != null) 
 Log.d(TAG, "Data received in setter and getter: " + getSongListResult().get(2).getTitle() + getSongListResult().get(2).getRelease_date()); 
 else 
 Log.e(TAG, "List is super null");
 
 

public void setSongListResult(List<Song> songs)
 this.songs = songs;


public List<Song> getSongListResult()
 return this.songs;

I expect after call.enqueue(callback) the list would be populated however, this is not the case.

Feel free to note if this is a java problem and the setter-getter would work fine on most scenarios, or if this is specific to the response from the api call. If, so do recommend if the question needs to be changed.

Actually, I would much rather write a comment, but since I don't have enough reputation to do that, I'll write my input as an answer. I hope that I can be of help.

It looks to me as if there is a problem with scope. If you remove all code that is "out of reach" for the second getList() it looks like this

public void method1()
 Object1 obj = new Object1()
 obj.execute(); // Suppose execute method is pre-defined and just means it'll execute the `innerMethod`.
 System.out.println(getList().get(0).getName()); // This returns null for the getList().

There seems to be nothing for getList() to get, so maybe that's the reason for your problem.

public void method1()
 Object1 obj = new Object1()
 @Override
 public void innerMethod(Object response)
 setList(response.list);
 // Displaying the result of the getter is for sample purposes
 System.out.println(getList().get(0).getName()); // This works and prints out the name of the first item.
 
 ;
 obj.execute(); // Suppose execute method is pre-defined and just means it'll execute the `innerMethod`.
 System.out.println(obj.getList().get(0).getName()); // <-- ***********

I think you're calling getList() from the wrong object. If you don't specify the object to call the method from it's assuming this.list(), in which case you're getting uninitialized data members.