Java创建UTF8格式文件

private void CreateUtf8File(File configFile) {
    try {
        configFile.createNewFile();
        //BufferedWriter output = new BufferedWriter(new FileWriter(configFile));
        BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(configFile), "UTF-8"));
        output.write("你好啊");
        output.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

要创建GBK格式文件，将UTF-8替换为GBK即可。