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Characters and Strings

When working with character data, you will typically use either the char primitive type, or one of the following three classes:

• String — A class for working with immutable (unchanging) data composed of multiple characters.
• StringBuffer — A class for storing and manipulating mutable data composed of multiple characters. This class is safe for use in a multi-threaded environment.
• StringBuilder — A faster, drop-in replacement for StringBuffer, designed for use by a single thread only.

This section covers these string-related topics:

• Characters
• Strings, String Buffers, and String Builders
• Creating Strings, String Buffers, and String Builders
• Getting the Length of a String, String Buffer, or String Builder
• Getting Characters by Index from a String, String Buffer, or String Builder
• Searching for a Character or a Substring within a String
• Comparing Strings and Portions of Strings
• Manipulating Strings
• Modifying String Buffers and String Builders
• Strings and the Compiler
• Summary of Characters and Strings

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