Beginning Java 9 Fundamentals: Arrays, Objects, Modules, JShell, and Regular Expressions

© Kishori Sharan 2017

Kishori Sharan, Beginning Java 9 Fundamentals, https://doi.org/10.1007/978-1-4842-2902-6_15

15. Strings

Kishori Sharan¹ 

(1)Montgomery, Alabama, USA

In this chapter, you will learn:

• What a String object is

• How to create String objects

• How to use String literals

• How to manipulate Strings

• How to use Strings in a switch statement

• How to use StringBuilder and StringBuffer objects to work with mutable strings

All classes in this chapter are members of a jdojo.string module, as declared in Listing 15-1.

Listing 15-1. The Declaration of a jdojo.string Module

// module-info.javamodule jdojo.string {    exports com.jdojo.string;}

What Is a String?

A sequence of zero or more characters is known as a string. In Java programs, a string is represented ...