An Autograder is a test that runs on a student program to check whether or not it can be submitted. So, when a student press the ‘Submit Code’ button, the Autograders are run, and if any fail, the student is prevented from submitting their code for grading. #autogradejava detects the code of the Java language. Moreover, every language has its different Autograder. https://codequiry.com/auto-grading-programming