为什么蜡染不能用OutputStream保存.svg文件？

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;

public class SaveSVGFile {
    public static void main(String[] args) {
        String svgContent = "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"200\" height=\"200\">\n" +
                "  <circle cx=\"100\" cy=\"100\" r=\"50\" fill=\"red\" />\n" +
                "</svg>";

        try (BufferedWriter writer = new BufferedWriter(new FileWriter("example.svg"))) {
            writer.write(svgContent);
            System.out.println("SVG file saved successfully.");
        } catch (IOException e) {
            System.out.println("Failed to save SVG file: " + e.getMessage());
        }
    }
}