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 an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The @Any and @ManyToAny annotations are only available in Hibernate."

A block of code is set as follows:

@Entity
public class Person {
@Id
@GeneratedValue
private long id;
private String firstname;
private String lastname;
private String ssn;
private Date birthdate;
// getters and setters
}

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

{
Entity
public class Circle {
@Id
@GeneratedValue
}
}

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

select
course0_.id as id1_0_0_,
course0_.title as title2_0_0_,
students1_.course_id as course_i4_0_1_,
students1_.id as id1_1_1_,
students1_.gender as gender2_1_2_,
students1_.name as name3_1_2_ 
from
Course course0_

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.