Well I could sit down a have a good cry!

We planted our first ever apple tree early last year.Did'nt obviously expect any fruit last year.I waited in anticipation this year,first watching the tree come back to life,new buds,then leaves.....then apples!Well as you're probably all aware it has been quite blustery of late so I did expect some fruit to fall.On closer inspection today,it looks like the tree has some kind of disease(or the apples???)Earlier in the week I had a peek and some of the fruit looked "bruised".Today?There is a brown "stain"on some of them,and.....holes in the others.None are salvageable!So much for picking my own fruit come autumn.So firstly what is the brown stain?Kind of looks raised if that makes sense?And the holes?Is there any way in the future I can prevent these two things happening?I am in two minds of removing the tree altogether because if this is an ongoing problem,whats the point in keeping it?

Any advice much appreciated!Thankyou xx