Consider the following code segment: arraylist bulbs = new arraylist(); bulbs. add(new ; bulbs. remove(0); bulbs. add(new ; light b = new light(); bulbs. add(1, b); bulbs. add(new ; bulbs. remove(0); bulbs. add(new ; bulbs. remove(2); bulbs. add(new ; bulbs. add(1, new ; after running the code, what is the size of bulbs?

To answer this, lets run through the code:

ArrayList bulbs = new ArrayList(); //create a new empty list

bulbs.add(new Light()); //size of bulbs  = 1

bulbs.remove(0); //remove item at index 0. size of bulbs = 0

bulbs.add(new Light()); // size of bulbs = 1

Light b = new Light();
bulbs.add(1, b); // size of bulbs = 2

bulbs.add(new Light()); //size of bulbs = 3

bulbs.remove(0); //remove bulb at index 0. Size of bulbs = 2

bulbs.add(new Light()); size of bulbs = 3

bulbs.remove(2); //remove bulb at index 2. size of bulbs = 2

bulbs.add(new Light()); //size of bulbs = 3

bulbs.add(1, new Light()); //inserted at position 1. size of bulbs = 4

The final answer. Size of bulbs = 4.

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