Mis on CharSequence?

CharSequence is an interface in Java that represents a sequence of characters.

Main features:

• Immutable: Most implementations, such as String, are immutable, meaning their content cannot be changed after creation.
• Readable: Provides methods to access characters by index (charAt(int index)), get length (length()), and obtain a subsequence (subSequence(int start, int end)).
• Common interface: Allows processing of different types of character sequences (strings, buffers, etc.) in a uniform way.

Examples of implementations:

• String
• StringBuffer
• StringBuilder

Why use CharSequence?

• It allows functions to accept any type of character sequence, not just String. This increases flexibility and code reusability.
• It avoids the need to convert different types of sequences into String before use, which can be inefficient.