Performance Comparison Between Different Java String Concatenation Methods

Date: 2023-09-07

Java offers several ways to concatenate strings. Immutable methods like the + operator and concat() create new strings with each operation, which can be inefficient for many concatenations. Mutable alternatives, StringBuilder and StringBuffer (thread-safe), modify strings in place, improving performance, especially for large strings. StringJoiner provides a convenient way to join strings from collections. The best approach depends on the application's needs: prioritize immutability for simplicity and thread safety, or mutability for performance in single-threaded environments.

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