How to Validate the Size/Length Of a File Using Java

How to Validate the Size/Length Of a File Using Java

Greetings, today we shall be covering how to validate the length of a file using Java. Let's say you are asking the user to add an image to their profile or don't want the user to upload a document that is greater than 2mb. Well, this is a way to go about doing so.

We will be checking the file size of a file and comparing it to a condition or conditions to determine if the file size is valid or not. This is very similar to doing a length check on a string, but instead of chekcing how many characters we have in a string, we are checking the file size of our file.

We can conduct a range check or a length check on the file size using Java. This tutorial demostrates both ways.

Thanks for watching this tutorial on how to validate the size/length of a file using Java.

How to Validate the Size/Length Of a File Using Java