easy assignment

1)      Given that the variable“list” represents a reference to a linked list. Define a method called “countNodes” that counts and returns the number of nodes in the list.

2)      Given that the variable “list” represents a reference to a linked list. Define a method called “delete” that removes the last node in the list.

3)      Given that the variable “button” is a reference to a JButton object. Write the necessary code that registers this object onto a mouse event, such that when the button is clicked the (x,y)location of the mouse pointer is displayed on the DOS screen.