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: “Let us examine the generalization process in the Vehicle class development.”
A block of code is set as follows:
public class Vehicle {
private boolean moving;
public void move(){
this.moving = true;
System.out.println("moving...");
}
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
sealed interface Engine permits ElectricEngine,
PetrolEngine {
void run();
void tank();
}
Any command-line input or output is written as follows:
$ mkdir main $ cd main
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: “The bytecode is running a Java virtual machine (JVM).”
Tips or important notes
Appear like this.