public class Stack<T> {

    //Constructor
    Stack() {
    }

    //String[] stackArray = new String[6];                    //Array used for stack
    T[] stackArray = (T[]) new Object[6];                   //Switched to Generic coding array type-casted to T[]
    int stackPointer = -1;                                  //Starts at -1 to show stack is empty
                                                            //Follows array index 0 being something is there

    //Prints the stack
    public void printStack() {

        for (int i = 0; i < stackArray.length; i++) {

            if (i == 0 && stackArray[i] == null) {          //Checks if stack is empty
                System.out.println("Stack is empty - Print Stack Function");
                break;                                      //Break out of the for loop
            }
            else if (stackArray[i] == null ) {              //Checks null values
                //Do nothing
            }
            else {
                System.out.println(stackArray[i]);          //Displays if not null
            }

        }

    }

    //Pushes an item onto the stack
    public void push(T item) {

        // only proceed if the stack is not full
        if ( stackPointer < (stackArray.length - 1) ) {
            stackArray[stackPointer + 1] = item;            //Push the item onto the stack
            stackPointer++;                                 //Increment the stack pointer
        } else {
        System.out.println("Stack is full - Push Function");                //Print stack full message
        }

    }

    //Takes the last item out of the stack
    public T pop() {

        T item;                                        //The item to be returned by the pop method

        if (stackPointer >= 0) {                            //Only proceed if the stack is not empty
            item = stackArray[stackPointer];
            stackArray[stackPointer] = null;
            stackPointer--;
            return item;
        }
        else {
            System.out.println("Stack is empty - Pop Function");           //Print empty stack method
            item = null;
            return item;
        }

    }

}