/**
* Inserts the specified element before the specified position into the receiver. Shifts the
* element currently at that position (if any) and any subsequent elements to the right.
*
* @param index index before which the specified element is to be inserted (must be in [0,size]).
* @param element element to be inserted.
* @exception IndexOutOfBoundsException index is out of range (<tt>index < 0 || index >
* size()</tt>).
*/
public void beforeInsert(int index, Object element) {
// overridden for performance only.
if (index > size || index < 0)
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + size);
ensureCapacity(size + 1);
System.arraycopy(elements, index, elements, index + 1, size - index);
elements[index] = element;
size++;
}
/**
* Inserts length dummies before the specified position into the receiver. Shifts the element
* currently at that position (if any) and any subsequent elements to the right.
*
* @param index index before which to insert dummies (must be in [0,size])..
* @param length number of dummies to be inserted.
*/
protected void beforeInsertDummies(int index, int length) {
if (index > size || index < 0)
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + size);
if (length > 0) {
ensureCapacity(size + length);
System.arraycopy(elements, index, elements, index + length, size - index);
size += length;
}
}
/**
* Appends the specified element to the end of this list.
*
* @param element element to be appended to this list.
*/
public void add(Object element) {
if (size == elements.length) ensureCapacity(size + 1);
elements[size++] = element;
}