The Bidi, BreakIterator, and Normalizer classes are not as widely used as the Character and String classes. Here is a brief overview of those classes:

This is the Bidi class:

public final class Bidi extends Object

This class is used to implement Unicode's bidirectional algorithm. This is used to support Arabic or Hebrew.

The BreakIterator class is used for finding text boundaries:

public abstract class BreakIterator extends Object implements Cloneable

This is the Normalizer class:

public final class Normalizer extends Object

This class contains two methods:

• isNormalized: Used to determine whether char values of a given sequence are normalized
• normalize: Normalizes a sequence of char values