Display display = getWindowManager().getDefaultDisplay();
int nWidth = display.getWidth();
int nHeight = display.getHeight();

          DisplayMetrics metrics = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(metrics);
            //get density per inch for example: 120 , 160 , 240
            mXDpi = metrics.xdpi; // 160 The exact physical pixels per inch of the screen in the X dimension. 
            mYDpi = metrics.ydpi;

// density
int nDensity = metrics.densityDpi; // 160 screen density expressed as dots-per-inch

          float  mMetersToPixelsX = mXDpi / 0.0254f; // 1 inch == 0.0254 metre
          float  mMetersToPixelsY = mYDpi / 0.0254f;
          
// Resolution
// The total number of physical pixels on a screen.
int wPix = metrics.widthPixels; // 320 The absolute width of the display in pixels.
int hPix = metrics.heightPixels; // 480 The absolute height of the display in pixels.
int nWidthDisplay = (wPix < hPix)? wPix : hPix;

float nWidthScreenInInch = wPix / mXDpi; //320 / 160 == 2.0 in inch.
float nHeightScreenInInch = hPix / mYDpi; //480 / 160 == 3.0 in inch.

// for example:
// density 120 per inch
//width 320 pix / 120 dpi == width 2.66 inch
//height 480 pix / 120 dpi == height 4.0 inch 

// density 240 per inch
//width 320 pix / 240 dpi == width 1.33 inch
//height 480 pix / 240 dpi == height 2.0 inch 

Or type path in Java JRE definition

How open String.class or others keywords definition with Eclipse.

/*in css*/
.links{
line-height: 48px;
font-size: 20px;
background-color: rgb(255,204,0);
}

/* in html page set class of link*/
<a class="links" href="m.mydomen.com/mypage.html">Blah blah mypage</a>

// or in css for all links on page
a {
line-height: 48px;
font-size: 20px;
}

/*html page*/
<a href="m.mydomen.com/mypage.html">Blah blah mypage</a>

public boolean isConnected() {
	 try {
		ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
		 return cm.getActiveNetworkInfo().isConnectedOrConnecting();
	} catch (Exception e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
		Log.e("isConnected", e.getMessage());
		Toast.makeText(getApplicationContext(), e.getMessage(),
				Toast.LENGTH_LONG).show();
		return false;
	}

  defaultConfig {
        applicationId "cz.okhelp.pocasiwidget"
        minSdkVersion 11
        targetSdkVersion 23
        versionCode 224
        versionName "2.2.4"
    }