How I save and retrieve an image on my server in a java webapp?

That depends on how much control you have over configuring the server. Ideal would be to configure a fixed path outside the Tomcat webapps folder. For example var/webapp/upload .

You can set this path as a VM argument or environment variable so that your webapp can retrieve it programmatically without the need to change the code.

I would consider allowing the user to upload to Amazon S3 directly. Amazon offers a service for that. Using that service, the client would post a form with the file directly to S3.

Once the file has arrived there, Amazon will redirect the client to one of your endpoints, to confirm that the data has arrived, passing you the relevant details.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.