I am having trouble with this one method in my ArraryList I

I am having trouble with this one method in my ArraryList. I can\'t seem to get the removeItem(index int):E throws invalidoutofBoundExceotion to work. Here is the UML for the class I only need help with removeItem. this is for java

UML DIAGRAM AND DISCUSSION FOR ArrayList

ArrayList<E extends Comparable<E>>

DEFCAP : int final = 50

origCap : int

numElements : int

list : Object[]

<<constructor>>ArrayList()

<<constructor>>ArrayList(size : int) throws InvalidSizeException

+ addItem(item : E) throws MaximumCapacityException

+ getItem(index int) : E throws IndexOutOfBoundsException

+ setItem(index int, item E) throws IndexOutOfBoundsException

+ removeItem(index int) : E throws IndexOutOfBoundsException

+ findItem(item E) : int

+ isEmpty() : Boolean

+ lengthIs() : int

+ clear()

+ toString() : String

+ sort()

- enlarge() throws MaximumCapacityException

public E removeItem(int index)

Attempts to remove the item at the given index from the ArrayList. If that index does not exist within the ArrayList an IndexOutOfBoundsException is thrown with the message: “Index out of Range”.

Solution

Hi, Please find my implementation.

Please let men know in case of any issue.

public E removeItem(int index){

   // base case, if index is out of range

   if(index >= numElements){

       throw new IndexOutOfBoundsException(\"Index bound exception\");

   }

   // storing items to be removed

   E item = list[index];

   int i = index;

   // removing list[index]

   while((i+1) < numElements){

       list[i] = list[i+1];

       i++;

   }

   // decreasing numElements

   numElements = numElements - 1;

   return item;

}