java读取本地文件设置了编码方式为什么还是乱码？？？？

// 读取文件
try {
File file = new File(
"C://Users/wulsh/Desktop/源码/数据Json/wuxixt_share.java");
String stringBuilder = "";
if (file.exists()) {
FileInputStream fileInputStream = new FileInputStream(file);


BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(fileInputStream, "UTF-8"));
while ((stringBuilder = bufferedReader.readLine()) != null) {
System.out.println(stringBuilder);
}
bufferedReader.close();
} else {
System.out.println("文件不存在");
}
} catch (IOException e) {
e.printStackTrace();
}
}