<cannot create file from contentbytes received fro...

# stackoverflow

[user]

cannot create file from contentbytes received from microsoft graph api in java android
So I have been working around with Microsoft Graph API's. I'd like to get email attachments from this API
GET /me/messages/{id}/attachments/{id}

This is the API which I am using.
I am getting contentBytes encoded in Base64
How to create file from contentBytes in JAVA?
Here is what I implemented to create the file which is not writing any thing in file
try {
if (f.exists()) f.delete();
f.createNewFile();
FileOutputStream fos = new FileOutputStream(f);
fos.write(fileData);...