List Insert Based on CompareTo

Here's some code I've had to write more than once. It inserts something into a list at a position based on the compareTo method. Consequently the element inserted must imlpement this.

public void addElement(MyElement aElement) 
{      
    List myElementsList = this.getMyList();
     
    // Check that the list exists
    if (myElementsList == null)
    {
        myElementsList = new ArrayList();
    }
 
    // Check that the list is not empty
    if (myElementsList.size() == 0)
    {
        myElementsList.add(0, aElement);  // add the element at the beginning
        return;
    }
     
    MyElement currentElement;
     
    for (int index = 0 ; index < myElementsList.size() ; index++) 
        {
            currentElement = (myElement) myElementsList.get(index);

            // if the current element has the same compareTo value as the element to be added
            if (currentElement.compareTo(aElement) == 0) 
            {
                // The hearing is already in the list.  Take no further action and return
                return;
            }
            // else if the current element is before the element to be added
            else if (currentElement.compareTo(aElement) < 0) 
            {
                myElementsList.add(index, aElement);
                return;
            }
        }
    }
}