Replacing the specified element of the
Java ArrayList
1) Object set(int index, Object element)
Replaces the element at specified index with the object passed
as a parameter. Returns the previous element that has been replaced.
Getting element from the ArrayList
1) Object get(int index)
Returns the element at the specified index in the ArrayList. Note
: We need to downcast the returned object to the desired type.
Removing elements from the ArrayList
1) Object remove(int index)
Removes the elements at the specified index in the list and shifts
the subsequent element of the list by one. This method returns the
element that has been removed from the list. This method can throw
IndexOutOfBoundException if the index specified is out of range.
2) void removeRange(int startIndex, int endIndex)
Removes the elements from list whose index is between startIndex
inclusive and endIndex exclusive and shifts the subsequent elements
of the list.
3) void clear()
Removes all elements of the ArrayList.
Convert ArrayList in to an Object array
1) Object[] toarray()
Returns array of Object containing all elements of the ArrayList
in the correct order.
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