add(int index, E obj)
Definition
This method is used to insert an element at a specific index in an ArrayList. It shifts the existing elements to the right and increases the size of the ArrayList by one.
Analogy
Imagine you have a line of people waiting for a bus. If someone wants to join the line at a specific position, they would need to shift all the people behind them to make space. Similarly, when you use add(int index, E obj), it shifts all the elements after that index to accommodate the new element.
Related terms
get(int index): This method retrieves and returns the element at a specified index in an ArrayList.
set(int index, E obj): This method replaces the element at a specified index in an ArrayList with a new element.
remove(int index): This method removes and returns the element at a specified index in an ArrayList.
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