The type MultipartEntity is deprecated

If you read the docs carefully, you'll notice that you should use MultipartEntityBuilder as an alternative.

For example:

MultipartEntityBuilder builder = MultipartEntityBuilder.create();        

/* example for setting a HttpMultipartMode */
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);

/* example for adding an image part */
FileBody fileBody = new FileBody(new File(image)); //image should be a String
builder.addPart("my_file", fileBody); 
//and so on

Note that there are several constructors for the FileBody class, by which you can provide mimeType, content type, etc.

After you're done with passing build instructions to the builder, you can get the built HttpEntity by invoking the MultipartEntityBuilder#build() method:

HttpEntity entity = builder.build();

I still see so many tutorials still using the deprecated APIs which is what lead me to this post. For the benefit of future visitors (until this API gets deprecated ;) )

File image = "...."; 
FileBody fileBody = new FileBody(image);
MultipartEntityBuilder builder = MultipartEntityBuilder.create()
                         .setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
                         .addTextBody("params", "{....}")
                         .addPart("my_file", fileBody);
HttpEntity multiPartEntity = builder.build();

String url = "....";
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(multiPartEntity);
...