How to Ensure UTF-8 Encoding When Writing Files in Java?

UTF-8 File Writing in Java

Enforcing UTF-8 encoding in Java file writing is essential for seamless character handling, especially when working with international or multilingual data. One common approach is to employ the FileWriter class to write text data to files. However, for UTF-8 enforcement, an alternative approach is recommended.

Instead of FileWriter, create a FileOutputStream to handle the underlying file operations. Then, wrap this stream in an OutputStreamWriter and specify the UTF-8 encoding in its constructor. This enables you to write data in UTF-8 character encoding. Encapsulate these steps within a try-with-resources statement for efficient resource management:

try (OutputStreamWriter writer =
             new OutputStreamWriter(new FileOutputStream(PROPERTIES_FILE), StandardCharsets.UTF_8))
    // perform file writing operations
}

This approach provides greater control over the encoding and ensures that the file is consistently written in UTF-8 character encoding, regardless of the system's default encoding.

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