How to get string text from AutoCompleteTextView?

public class FareActivity extends Activity {


int fareid;
String Source;
String Dest;
AutoCompleteTextView source;
AutoCompleteTextView dest;


static final String[] SOURCE = new String[] {
      "Delhi", "Mumbai", "Agra", "Jaipur};


static final String[] DEST = new String[] {
      "Delhi", "Mumbai", "Agra", "Jaipur};




/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fare);




    dest = (AutoCompleteTextView) findViewById(R.id.acdest);
    ArrayAdapter<String> dadapter = new ArrayAdapter<String>(this, R.layout.list_item, DEST);
    dest.setAdapter(dadapter);



source = (AutoCompleteTextView) findViewById(R.id.acsource);
ArrayAdapter<String> sadapter = new ArrayAdapter<String>(this, R.layout.list_item, SOURCE);
    dest.setAdapter(sadapter);




 // Fare id calculation

     if(Source=="Delhi" && Dest=="Jaipur")
     {
         fareid=1;
     }
     else  if(Source=="Delhi" && Dest=="Agra")
     {
         fareid=2;
     }
     else  if(Source=="Delhi" && Dest=="Mumbai")
     {
         fareid=3;
     }


}

I just want to store autocompletetextview 'source' and autocompletetextview 'dest' values to String variable 'Source' and String Variable 'Dest'. I will use both string variables for further processing in my project, so please help me out.