The add(int index, E ele) method of List interface in Java is used to insert the specified element at the given index in the current list.
public void add(int index, E element)
Parameter: This method accepts two parameters as shown in the above syntax:
- index: This parameter specifies the index at which we the given element is to be inserted.
- element: This parameter specifies the element to insert in the list.
Return Value: The return type of the function is void and it does not returns anything.
- UnsupportedOperationException – It throws this exception if the add() operation is not supported by this list.
- ClassCastException – It throws this exception if the class of the specified element prevents it from being added to this list.
- NullPointerException – It throws this exception if the specified element is null and this list does not permit null elements.
- IllegalArgumentException – It throws this exception if some property of this element prevents it from being added to this list.
Below programs illustrate the List.add(int index, E element) method:
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