toLowerCase Locale toUperCase Locale Java Android

try {
// your code for example: 
//  LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);         
//  Criteria criteria = new Criteria();
//        provider = locationManager.getBestProvider(criteria, false);
//  locationManager.requestLocationUpdates(provider, 400, 1, this);
        } catch (SecurityException e) {
            e.printStackTrace();
        }

		Drawable dr = getResources().getDrawable(R.drawable.algebra);
		int h = dr.getIntrinsicHeight();
		int w = dr.getIntrinsicWidth();

		Bitmap ball = BitmapFactory.decodeResource(getResources(), R.drawable.algebra);
		int _nWidth = ball.getWidth();
		int _nHeight = ball.getHeight();

ImageView imgV = (ImageView)findViewById(R.id.myView);
        imgV.setLayoutParams(new ViewGroup.LayoutParams(
        		ViewGroup.LayoutParams.WRAP_CONTENT,
        		0));

        ViewGroup.LayoutParams layoutParams = imgV
				.getLayoutParams();
		layoutParams.height = 0;
		imgV.setLayoutParams(layoutParams);

long dayInMili = 100000000;

GregorianCalendar calToDay = new GregorianCalendar();
int nD = calToDay.get((Calendar.MILLISECOND)); // +dayInMili;
System.out.println(nD);

long lTime = calToDay.getTimeInMillis();
System.out.println(lTime);

Date dtA = new Date(lTime); // today
///@SuppressWarnings("deprecation")
int nD1 = dtA.getDate(); // DEPRECATED Day Of Month 1 - 31
System.out.println(nD1+" nD1");

GregorianCalendar cal = new GregorianCalendar();
int nD2 = calToDay.get(Calendar.DATE); // Day Of Month
System.out.println(nD2+" nD2");

cal.setTimeInMillis(lTime+dayInMili);// setTime(dtA);
int nD3 = cal.get(Calendar.DATE); // Day Of Month + 1 day
System.out.println(nD3+" nD3");