java.lang.Void vs void vs Null
android, java, null, void
Solution
You have an extra comma in your code.
myAsyncTask.execute((Void),null);
//^extra comma right here
Also, there is no need to cast `null` to `Void`, because (1) `Void` has no instances and thus there is no `Void` object, and (2) casting `null` to anything is rather useless because null is a valid value for any Object data type.
Code should probably just be:
myAsyncTask.execute(null);
Problem
What exactly is the difference between `Void`, `void`, and can I just use `null` instead? I'm asking this is because I'm looking at sample Android code where they used Void but Eclipse errors on it (it says `Void cannot be resolved to a variable`). My code that breaks is ``` public class MyAsyncTask extends AsyncTask<Void, Void, Boolean>{ ... } ``` I use it like this ``` MyAsyncTask myAsyncTask = new MyAsyncTask(); myAsyncTask.execute((Void),null);//this is the line that breaks "Void cannot be resolved to a variable" ```