Java exam paper

Hi, one of my first times posting on here and i'm not sure if this is an acceptable request but i've completed a past exam paper for a java repeat module i'm sitting in 2 weeks. So far both my lecturers have declined marking it for me so I only know what I think is right.

If someone could take a look over it and let me know where I am going wrong (I've written up full questions and neatly formatted answers in a word document) I'd greatly appreciate it.

Thank you,

Harry