Conventions used
There are a number of text conventions used throughout this book.
Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system.”
A block of code is set as follows:
public interface RouterNetworkUseCase {
Router addNetworkToRouter(RouterId,
Network network);
Router getRouter(RouterId routerId);
} When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
function getRouter() {
const routerId = document.
getElementById("routerId").value;
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
console.log(this.responseText);
if (this.readyState == 4 && this.status == 200) {
const json = JSON.parse(this.responseText)
createTree(json)
} Any command-line input or output is written as follows:
java -jar target/topology-inventory-1.0-SNAPSHOT-jar-with-dependencies.jar rest REST endpoint listening on port 8080... Topology & Inventory WebSocket started on port 8887...
Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Select System info from the Administration panel.”
Tips or important notes
Appear like this.
