MainActivity.class(Timber)

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Timber.i("I'm %d years old", 22);
        Timber.d("GPA : %.2f", 3.56);
        Timber.wtf("%s %d %s %s %.2f", "I have ", 2, "cars", " and I have a money ", 1500.00);
    }
}