Create a Java File object (or equivalent) using a byte array in memory (without a physical file)

Question

I want to create a Java File object in memory (without creating a physical file) and populate its content with a byte array.

Can this be done?

T

Answer 1

It is important to create the MimeMessageHelper object correctly to support attachments and inline resources.

Example: MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");

In this example since multipart is set to true MULTIPART_MODE_MIXED_RELATED will be used and attachments and inline resouces will be supported.