25. Strings, Characters and Regular Expressions

Objectives

In this chapter you’ll learn:

• To create and manipulate immutable character string objects of class String.

• To create and manipulates mutable character string objects of class StringBuilder.

• To create and manipulate objects of class Character.

• To use a StringTokenizer object to break a String object into tokens.

• To use regular expressions to validate String data entered into an application.

The chief defect of Henry King Was chewing little bits of string.

Hilaire Belloc

Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences.

William Strunk, Jr.

I have made this letter longer than usual, because I lack the time to ...

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