I want to create 4 methods for my singly linked list class: public boolean removeFirstOccurence(Object o), public boolean removeLastOccurence(Object o), public int indexOf(Object o), public int lastIndexOf(Object o). I am confused about having an Object as a parameter. Therefore I don't have any idea how to write these methods. I'm not gonna ask you to write it for me but can anyone sort of give me the skeleton code of each method so I can understand what is going on? I'm desperate!