How to Write UTF-8 Files in Java?

Writing UTF-8 Files in Java

Question:

How to write UTF-8 files in Java?

Background:

The existing code uses FileWriter to create 1252 code page files, which need to be forced to UTF-8 files.

Solution:

Unable to specify encoding when using FileWriter. To create a UTF-8 file, use the following steps:

1. Create a FileOutputStream object.
2. Wrap the FileOutputStream object in an OutputStreamWriter object, specifying the encoding (StandardCharsets.UTF_8) in the constructor.
3. Use try-with-resources statement to write data to OutputStreamWriter.

The following example demonstrates how to do this:

try (OutputStreamWriter writer =
             new OutputStreamWriter(new FileOutputStream(PROPERTIES_FILE), StandardCharsets.UTF_8)) {
    // 写入数据
}

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