Question

How to get InputStream and size of File type in servlet?

Previously i was using FileUpload type which has getInputStream() and getSize() methods, but now i have to use File type for bulk upload. I have tried but File type has no such methods.

Answer 1

Use File#length() to get the size.

long size = file.length();
// ...

Use FileInputStream constructor to create an InputStream based on a given File.

InputStream input = new FileInputStream(file);
// ...

See also the File javadoc and the basic Java I/O tutorial.