I am a rookie in Android. Tried to create an android project for an app that displays a simple `"Hello World!"` message. However when I run the Run the code, it shows the below 18 errors :

`ActionBarActivity` cannot be resolved to a type 

`ActionBarActivity` cannot be resolved to a type 

`ActionBarActivity` cannot be resolved to a type

error: Error retrieving parent for item: No resource found that matches the given name `'Theme.AppCompat.Light.DarkActionBar'.` 

error: Error retrieving parent for item: No resource found that matches the given name 
error: Error retrieving parent for item: No resource found that matches the given name 

R cannot be resolved to a variable  

R cannot be resolved to a variable  

R cannot be resolved to a variable
R cannot be resolved to a variable
R cannot be resolved to a variable

The import android.support.v7 cannot be resolved  

The import android.support.v7 cannot be resolved 

The method `getMenuInflater()` is undefined for the type `Droid2Activity` 

The method `getSupportFragmentManager()` is undefined for the type `Droid2Activity`

The method `onCreate(Bundle)` of type `Droid2Activity` must override or implement a supertype method

The method `onCreateOptionsMenu(Menu)` of type `Droid2Activity` must override or implement a supertype method

The method `onOptionsItemSelected(MenuItem)` of type `Droid2Activity` must override or implement a supertype method

FYI I am using eclipse Indigo SR2. And have installed Android API15. Please let me know how to go about this and get them resolved.

Thanks and Regards,
Manoj Naik