Eclipse Log.e println needs a message

public class MainActivity extends Activity {
TextView hTextView;
TableRow hTableRow;
Button hButton, hButtonStop;
private Handler mHandler = new Handler();
private int nCounter = 0;
@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        hTextView = (TextView)findViewById(R.id.idTextView);
        hButton = (Button)findViewById(R.id.idButton);
        hButton.setOnClickListener(mButtonStartListener);
        hTableRow = (TableRow)findViewById(R.id.idTableRow1);


        
        
    } // end onCreate

 View.OnClickListener mButtonStartListener = new OnClickListener() {
	public void onClick(View v) {
           hTableRow.setBackgroundColor(Color.YELLOW);
	}
 };
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >


<TableLayout android:layout_height="wrap_content" android:layout_width="fill_parent" android:id="@+id/tableLayout1">
    <TableRow android:id="@+id/idTableRow1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" android:background="#5655AA">
<TextView  
	android:id="@+id/idTextView"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    
    </TableRow>
</TableLayout>
</LinearLayout>

 <!-- text1 automatically linkifies things like URLs and phone numbers. -->
  <TextView
            android:id="@+id/text1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:autoLink="all"
            android:text="@string/link_text_auto"
            />

public class MainActivity extends Activity {
TextView txtV;
	Context cntx;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        txtV = (TextView)findViewById(R.id.idLabel);
        cntx = this;
        try {
			StringBuilder strBuilder = myFunction(cntx);
			txtV.setText(strBuilder);
		} catch (IOException e) {
			e.printStackTrace();
		}

        
    }
    
    
    private StringBuilder myFunction(Context context) throws IOException {
        final Resources resources =  context.getResources();
        InputStream inputStream = resources.openRawResource(R.raw.my_file);
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        StringBuilder strBuild = new StringBuilder();
        try {
            String line;
            while ((line = reader.readLine()) != null) {
            	strBuild.append(line);
            }
        } finally {
            reader.close();
        }
       return strBuild; 
       
    }
}

        float mXDpi;
        float mYDpi;
           DisplayMetrics metrics = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(metrics);
            mXDpi = metrics.xdpi; // The exact physical pixels per inch of the screen in the X dimension. 
            mYDpi = metrics.ydpi;
          float  mMetersToPixelsX = mXDpi / 0.0254f; // 1 inch == 0.0254 metre
          float  mMetersToPixelsY = mYDpi / 0.0254f;