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: “As you can see in the following, we can use the javap command without any parameters.”

A block of code is set as follows:

public class CH1EX1 {
  public CH1EX1 { 
  public static void main(java.lang.String[]);
  }
}

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

public class Example2 {
  public static void main(String[] args) {
    List<String> petNames = new LinkedList<>();

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

$ cd src
$ ls
CH1EX1.java
$

Tips or important notes

Appear like this.