Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and explanations of their meanings.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "In the Android Studio Project Explorer, double-click on the layout folder to reveal the activity_main.xml file within it."

A block of code is set as follows:

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

int partA = 9;
int partB = 9;
correctAnswer = partA * partB;
int wrongAnswer1 = correctAnswer - 1;
int wrongAnswer2 = correctAnswer + 1;

Any command-line input or output is written as follows:

info﹕ a = 10
info﹕ b = Alan Turing
info﹕ c = true

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "When prompted to import another class, click on OK."